4 System description

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C4200服务器机架规格说明说明书

System Specifications•C4200Server Chassis Specifications,on page1•Power Cord Specifications,on page3C4200Server Chassis SpecificationsThis appendix lists the physical,environmental,and power specifications for the server chassis.Physical SpecificationsThe following table lists the physical specifications for the C4200server chassis.Table1:Physical SpecificationsDescriptionSpecificationHeight3.4in.(87.2mm)Width16.9in.(429.3mm)(width of the chassis rail-receiving surface;not including front latch-handles) Depth(length)Server only:32.6in.(827.6mm)Server with Cisco slide rails and CMA:38.0in(965.2mm)Maximum weight95.8lb.(43.5Kg)(fully loaded chassis with four compute nodes)Environmental SpecificationsThe following table lists the environmental requirements for the C4200server chassis.Table2:Physical SpecificationsDescriptionSpecification41to 95°F (5to 35°C)Derate the maximum temperature by 1°C per every 305meters of altitude abovesea level.For more information,see the Cisco Unified Computing System Site PlanningGuide:Data Center Power and Cooling .Temperature,Operating –40to 149°F (–40to 65°C)Temperature,non-operating(when the server is stored or transported)10to 90%Humidity (RH),operating5to 93%Humidity (RH),non-operating(when the server is stored or transported)0to 10,000feet Altitude,operating0to 40,000feet Altitude,non-operating(when the server is stored or transported)5.5Sound power levelMeasure A-weighted per ISO7779LwAd (Bels)Operation at 73°F (23°C)40Sound pressure levelMeasure A-weighted per ISO7779LpAm (dBA)Operation at 73°F (23°C)PowerSpecificationsDo not mix power supply types or wattages in the server.Both power supplies must be identical.Note You can get more specific power information for your exact server configuration by using the Cisco UCS Power Calculator:The power specifications for the supported power supply options are listed in the following sections.2400W AC Power SupplyThis section lists the specifications for each 2400W AC power supply (Cisco part number UCSC-PSU3-2400W).System SpecificationsPower SpecificationsTable 3:2400W AC SpecificationsSpecification DescriptionNominal range:200–240V AC(Range:180–264V AC)AC Input V oltage Nominal range:50to 60Hz(Range:47–63Hz)AC Input Frequency 16A at 200V AC Maximum AC Input current35A at 35°CMaximum inrush current 2400W at 200–240V ACMaximum output power per PSU 12VDC Power supply output voltage12VDC Power supply standby voltageClimate Savers Platinum Efficiency (80Plus Platinum certified)Efficiency ratingRSP2Form factorIEC60320C20Input connector Power Cord SpecificationsEach power supply in the server has a power cord.Standard power cords or jumper power cords are available for connection to the server.The shorter jumper power cords,for use in racks,are available as an optional alternative to the standard powercords.Only the approved power cords or jumper power cords listed below are supported.Note Table 4:Supported Power CordsLength (Meters)Length (Feet)Description4.2614ArgentinaCAB-IR2073-C19-ARAC power cord,16A,250V ACPlugs:IRSM 2073to IEC 60320C19System SpecificationsPower Cord Specifications4.2614Australia and New ZealandCAB-AC-16A-AUSAC power cord,16A,250V ACPlugs:AU20S3to IEC60320C194.2614BrazilCAB-9K16A-BRZAC power cord,16A,250V ACPlugs:EL224to IEC60320C194.2614Europe,ContinentalCAB-AC-2500W-EUAC power cord,16A,250V ACPlugs:CEE7/7to IEC60320C194.2614IndiaCAB-SABS-C19-INDAC power cord,16A,250V ACPlugs:SABS164-1to IEC60320C194.2614 InternationalCAB-AC-2500W-INTAC power cord,16A,250V ACPlugs:IEC309to IEC60320C194.2614IsraelCAB-AC-2500W-ISRLAC power cord,16A,250V ACPlugs:SI16S3to IEC60320C194.2614IsraelCAB-S132-C19AC power cord,16A,250V ACPlugs:S132to IEC60320C194.2614ItalyCAB-C2316-C19-ITAC power cord,16A,250V ACPlugs:CEI23-16to IEC60320C19System SpecificationsSystem Specifications310JapanCAB-C19-C20-3M-JPAC power cord,16A,250V ACPlugs:C20to IEC 60320C19Includes Japan PSE mark4.2614KoreaCAB-9K16A-KORAC power cord,16A,250V ACPlugs:Src plug to IEC 60320C194.2614North America and JapanNon-lockingCAB-AC-2500W-US1AC power cord,16A,250V ACPlugs:NEMA 6-20to IEC 60320C19 4.2614North America and JapanLockingCAB-AC-C6K-TWLKAC power cord,16A,250V ACPlugs:NEMA L6-20to IEC 60320C19 4.2614Peoples Republic of ChinaCAB-AC-16A-CHAC power cord,16A,250V ACPlugs:NGB16C to IEC 60320C192.37.5TaiwanCAB-AC-C19-TWAC power cord,16A,250V ACPlugs:TW1-15P to IEC 60320C192.58SwitzerlandCAB-ACS-16AC power cord,16A,250V ACPlugs:SEV 5934-2,Type 23to IEC 60320C19System SpecificationsSystem Specifications4.2614United KingdomCAB-BS1363-C19-UKAC power cord,16A,250V ACPlugs:BS-1363to IEC60320C191.86United StatesCAB-L520P-C19-USAC power cord,16A,250V ACPlugs:NEMA L5-20to IEC60320C19413United StatesCAB-US515-C19-USAC power cord,16A,250V ACPlugs:NEMA5-15to IEC60320C194.2614United StatesCAB-US520-C19-USAC power cord,16A,250V ACPlugs:NEMA5-20to IEC60320C19413United StatesCAB-US620-C19-USAC power cord,16A,250V ACPlugs:NEMA6-20to IEC60320C192.79Cabinet Jumper Power CordCAB-C19-CBNAC power cord,16A,250V ACPlugs:IEC60320C20to IEC60320C19NANANo power cord optionR2XX-DMYMPWRCORD System SpecificationsSystem Specifications。

西川电子D3000M模Bus系列计算机到模 distance模块说明书

D3000M MODBUS SERIESCOMPUTER TO ANALOG OUTPUT MODULESD3000M FEATURES•Analog output ranges: 0-1V, ±1V, 0-5V, ±5V, 0-10V,±10V, 0-20mA, 4-20mA.•Communicates in ASCII with RS-232 or RS-485 serial ports.•Programmable high/low output limits.•500Vrms output isolation.•12-bit output resolution.•Scaling in engineering units.•Baud rates: 300 to 115,200.•Nonvolatile digital calibration.•Output protection: 240VAC (current output).±30V (voltage outputs).•Direct connection to ‘dumb’ terminals or modems.•Requires +10 to +30Vdc unregulated supply.•May be located up to 4,000 feet from host (RS-485).•Addressable: up to 247 Modbus units per serial port.•‘Bumpless’ manual control inputs.D3000M PROGRAMMING FEATURES•Fully programmable output slopes: 0.01V/s (mA/s) to 65535V/s (mA/s).•Programmable watchdog timer provides orderly shutdown in the event of host failure. APPLICATIONS•Motion control•Motor speed control•Robotic welding control•Interfaces to modems•Programmable analog source for product testD3000M SPECIFICATIONS (typical @+25°C and nominal power supply unless otherwise noted.)Analog Output•Single channel analog output.Voltage: 0-1V, ±1V, 0-5V, ±5V, 0-10V,±10V. Current: 0-20mA, 4-20mA.•Output isolation: 500V rms.Communications•Communications in ASCII via RS-232C, RS-485 ports.•Selectable baud rates: 300, 600, 1200, 2400, 4800, 9600,19200, 38400, 57600, 115200.•NRZ asynchronous data format; 1 start bit, 7 data bits, 1 parity bit and 1 stop bit.•Parity: odd, even, none.•User selectable channel address.•ASCII format command/response protocol.•Up to 247 Modbus multidrop modules/host serial port.•Communications distance up to 4,000 feet (RS-485).•Can be used with “dumb” terminal.•All communications setups (address, baud rate, parity) stored in nonvolatile memory using EEPROM.•Checksum can be added to any command or response. PowerRequirements:Unregulated +10V to +30Vdc, 0.75W max. (voltage output), 1.0W max. (current output). Internal switching regulator.Protected against power supply reversals.EnvironmentalTemperature Range: Operating -25°C to +70°C.Storage -25°C to +85°C. Relative Humidity: 0 to 95% noncondensing. NOTE: Spacing for mounting screws = 2.700" (6.858 cm).Screw threads are 6 X 32.D3000M Ordering GuideMODEL OUTPUT RANGE/INPUTVoltage OutputD3121M±1V Output/RS-232C InputD3122M±1V Output/RS-485 InputD3131M±5V Output/RS-232C InputD3132M±5V Output/RS-485 InputD3141M±10V Output/RS-232C InputD3142M±10V Output/RS-485 InputD3161M0 to 1V Output/RS-232C InputD3162M0 to 1V Output/RS-485 InputD3171M0 to 5V Output/RS-232C InputD3172M0 to 5V Output/RS-485 InputD3181M0 to 10V Output/RS-232C InputD3182M0 to 10V Output/RS-485 InputCurrent OutputD3251M0 to 20mA Output/RS-232C InputD3252M0 to 20mA Output/RS-485 InputD3261M 4 to 20mA Output/RS-232C InputD3262M 4 to 20mA Output/RS-485 InputGENERAL DESCRIPTION & BLOCK DIAGRAMThe DGH D3000M series are complete computer-to-analog output interfaces. They are designed designed for systems based on the Modbus™ RTU protocol. Simple Modbus commands are used to control a 12-bit DAC (Digital-to-Analog Converter) which is scaled to provide commonly used current and voltage ranges. An 8-bit CMOS microprocessor provides an intelligent interface between the host and the DAC.The DGH modules are easy to use. You do not need engineering experience in complicated data acquisition hardware. This modular approach to data acquisition is extremely flexible and cost effective. The modules can be mixed and matched to fit the application. They can be placed remote from the host and from each other. You can string up to 247 modules on one set of wires.Figure 1 shows a functional block diagram of theD3000M. The DAC converts digital data derived from host commands into the desired analog output. The microprocessor receives commands and data from the host computer through an RS-232 or RS-485 port.In response to host commands, the microprocessor produces the appropriate digital data necessary to control the DAC. Digital data is transmitted to the DAC through opto-isolators that provide electrical isolation. The DAC produces a precise analog current that is directly propor-tional to the magnitude of the digital data. The DAC output current is processed and amplified by signal conditioning circuits to produce the desired output voltage or current. Output protection circuits protect the module from potentially damaging output faults.An EEPROM (Electrically Erasable Programmable Read-Only Memory) retains important data such as the ad-dress, baud rate, parity and calibration data even if the module is powered down.The power supply converts the raw 10 to 30V input power into regulated voltages used to operate the module. The power it supplies to the DAC and output circuits is transformer isolated from the input power and communi-cations connections. The transformer and opto-isolators provide an isolation barrier between the output section and the rest of the circuitry. The isolation barrier is helpful in breaking ground loops, isolating troublesome common-mode voltages and protects the host and module in cases where the output may accidentally contact AC power lines.The combination of an accurate high-resolution DAC and a dedicated microprocessor produces a very powerful system for generating process control signals. The microprocessor provides software addressing for mul-tidrop capability, data formatting in engineering units, limit checking, digital calibration and many other features not possible with unintelligent analog output systems.All modules are supplied with screw terminal plug con-nectors and captive mounting hardware. The connectors allow system expansion, reconfiguration or repair without disturbing field wiring.Figure 1. D3000M Block Diagram.MANUAL MODEManual Up/Down control option provides a local operator interface to control the analog output value independent of the host. As shown in Figure 2, the analog output may be moved up or down by shorting the UP* or DN* inputs to the GND terminal. Grounding both pins at once holds the output at its present value and inhibits any output commands from the communications ports. The control inputs may also be logic signals from other equipment. The manual mode controls the output with a linear slope. The slope rate on D3000M modules is fixed and scaledso that a full-scale output change takes 5 seconds.MostFigure 2. Manual Up/Down Control.Most DACs provide a step function when a new output value is desired. That is, the analog output change is in-stantaneous subject only to DAC settling time. In many applications this characteristic is undesirable and a grad-ual controlled output slew rate is more appropriate. In ap-plications where controlled output rates are needed, pre-cious host computer time must be used to continually monitor and step the DAC until the desired output is reached.The D3000M allows controlled output slopes automati-cally without host computer intervention. User-program-mable output slew rates are stored in nonvolatile memory. If a command is sent to the D3000M to change SLOPE CONTROLCOMMAND SETThe D3000M series uses the Modbus RTU protocol for communication. The Modbus protocol uses a master-slave technique, in which only the master device can initiate transactions. The slave devices respond by supplying the requested data to the master or by taking the action requested in the query.The master can address any slave. The returned messages are considered response messages.The Modbus protocol format used by a master con-sists of a device address, a command function code which defines the operation to be performed, data required with the command, and an error checking value. The slave response message contains any required data and error checking value. If an error occurs, an exception code will be generated. The supported master codes are:Code Description01Read Coil Status02Read Input Status03Read Holding Register04Read Input Register06Preset Single Register10Preset Multiple Registers01Read Coil Status is a digital input such as contact status or contact closure.02Read Status inputs reads the status of dis-crete inputs.03Read Holding Register is used to read the analog output value.04Read Input Register is used to read the ana log output value.06Preset Single Register is used to temporarily suspend Modbus RTU mode and return toDGH ASCII protocol mode.10Presset Multiple Registers is used to write multiple data values to multiple registers.Typical Command/Response sequenceA typical Modbus RTU command to a module may look like this:01 06 00 00 80 00 EB 0AThis example is a Modbus Force Single Coil command. The 01 is the address of the slave DGH module being commanded. Each slave device must have its own unique address. The 06 character specifies the Modbus Preset Single Register command. The next two charac-ters 00 00 specify the address of the register to be modified. The 80 00 is the data value to be written. The final two characters of the command (EB 0A) make up the Cyclical Redundancy Check (CRC), used to check for errors in the message.The typical response message for this command is to echo the command back to the host computer. There-fore, the response message would look like this:01 06 00 00 80 00 EB 0AAny other response message, other than the echoed command, would indicate that a Modbus exception error code was returned or communications time out occurred. All messages must be transmitted as continuous strings. Messages are terminated by a silent period of at least 3.5 character times.SETUPThe D3000M series are initiated at the factory using the DGH ASCII protocol. This allows easy setup and con-figuration, including the Modbus slave address value. Setup and configuration can be performed using a Ter-minal program or using the DGH Utility Software on a Windows based computer. Each D3000M module must be properly configured before installation into a Modbus system.SOFTWARE COMPATABILITYThe Modbus RTU protocol is supported by all major process control software programs on the market today. Including OPC server programs. Using these software programs and the DGH Modbus compatible modules, a data acquisition system can be created with ease.the output value, the output will automatically slope to the new value at the specified rate. The nonvolatile slope value is restored each time the module is pow-ered up.The D3000M microprocessor controls the output slew rate by updating the DAC at a rate of 1000 conversions per second at precise 1ms intervals. In this manner the DAC is smoothly stepped until the final output value is reached. The DAC's incremental output steps and its conversion rate combine to make the output change appear to be a linear ramp.WATCHDOG TIMERThe D3000M contains a user-programmable software timer to provide an orderly shutdown of the output sig-nal in the event of host computer or communications failure. The timer is preset using the Watchdog Timer command to specify a timer interval in minutes. The timer is continually incremented in software. Each time the module receives a valid command, the timer is cleared to zero and restarted. If the timer count reaches the preset value, the output will automatically be forced to slew to the starting value using the present output slope rate. The starting value should be programmed to provide a "safe" output value to minimize damage and disruption to the system under control.。

英语四六级资料

英语四六级资料以下为您生成 20 个关于英语四六级的相关资料示例：---## 1. abandon [əˈbændən]- 英语释义：to leave a place, thing, or person permanently, especially when you should not- 短语：abandon oneself to 沉溺于；abandon hope 放弃希望- 单词用法：abandon 是及物动词，其后可接名词、代词作宾语。

- 双语例句：- He abandoned his wife and children. （他抛弃了他的妻子和孩子。

）- Don't abandon yourself to despair. （别自暴自弃。

）## 2. ability [əˈbɪləti]- 英语释义：the physical or mental power or skill needed to do something- 短语：ability to do sth. 做某事的能力；have the ability 有能力- 单词用法：ability 为可数名词，复数形式为 abilities。

- 双语例句：- She has the ability to speak several languages. （她有说几种语言的能力。

）- His ability in mathematics is remarkable. （他在数学方面的能力很出色。

）## 3. abnormal [æbˈnɔːml]- 英语释义：different from what is usual or normal; strange- 短语：abnormal behavior 异常行为；abnormal phenomenon 反常现象- 单词用法：abnormal 为形容词，常作定语或表语。

- 双语例句：- His heart rate was abnormal. （他的心率不正常。

绿色MAX DRC 0-10V智能包说明书

Leviton Manufacturing Co., Inc. Lighting & Controls10385 SW Avery Street, Tualatin, OR 97062 tel 800-736-6682 tech line (6:00AM-4:00PM PT Mon-Fri) 800-959-6004 ©2023 Leviton Manufacturing Co., Inc. All rights reserved. Subject to change without notice.DescriptionThe GreenMAX ® DRC 0-10V Smart Pack enables switching and 0-10V dimming control of a single zone of fixtures, allowing for a distributed control solution. Used to control multiple fixtures in a zone or for plug load control solutions, the DRC uses distributed relays, which eliminates the need to run wires back to a cabinet. This distributed system architecture saves on installation and equipment costs. DRC relays can be used as a normal or emergency relay; a remote relay with the GreenMAX DRC system; or as a single room control relay with the Sapphire™ Touch Screen.System DescriptionThe GreenMAX DRC Room Control System offers a fully distributed room control system, with each room operating independently of others—no dependence on network processors or centralized controllers. This revolutionary system is fully configurable via the GreenMAX DRC app for smart devices, and can be used to comply with IECC, ASHRAE 90.1, and 2022 Title 24, Part 6 occupancy/vacancy sensing, multi-level lighting, daylight harvesting, partial-ON, partial-OFF, scheduling, exterior lighting, demand response and receptacle control requirements.GreenMAX DRC AppWirelessly commission, configure, control, monitor and provision the GreenMAX DRC system using the GreenMAX DRC App designed for any WiFi-enabled Android or iOS smart device.Applications• Single channel LumaCAN 0-10V relay • Distributed controls• GreenMAX DRC remote relay • GreenMAX remote relay• Direct load control from Sapphire™ Use With These Leviton Systems • GreenMAX DRC• GreenMAX relay panels •Sapphire TouchscreenGreenMAX ® DRC 0-10V Smart PackFeatures• Single channel device—(1) 0-10V output plus (1) relay • Plug load controls • UL924 Emergency• Utilizes Leviton High Inrush Stability (H.I.S.) circuitry for increased reliability• Connects via the LumaCAN network using RJ45 connectors and CAT6 wiring• 0-10V control can be Class 1 or Class 2 wiring• Used for both switching only loads and dimming loads controllable with a 0-10V control signal• All relay models are latching to reduce parasitic energy waste over NO/NC relays• UL2043 Plenum rated—for use in Chicago Plenum applications—see technical article Install Notes• Installs as 4” square electrical box cover or via 1/2” nipple • When Class 2 in conduit is required, use 4” square extension ring and blank cover on low voltage side• May be field-painted to match surroundings (requires 4Sblank cover to protect Class 2 side)Wiring Diagram*Can be used to monitor normal power on emergency circuits, see solution sheet for details.**Depending on manufacture date, pink wire may be gray.LumaCANFor 120-277VAC applications only:Dimensions DiagramLeviton Manufacturing Co., Inc. Lighting & Controls10385 SW Avery Street, Tualatin, OR 97062 tel 800-736-6682 tech line (6:00AM-4:00PM PT Mon-Fri) 800-959-6004Visit our Website at: /greenmaxdrc©2023 Leviton Manufacturing Co., Inc. All rights reserved. Subject to change without notice.G-9664E/G23-mmREV JUL 2023。

4-20mA Display Installation and Operation Manual

4-20mA Display Installation and Operation ManualTable of ContentsDOCUMENTATION CONVENTIONS (2)Section 1: System Description (3)Function and Theory (3)Section 2: System Installation (4)Wiring the transducer (4)Setting Display Units (5)Section 3: System Operation (9)Quick Start Guide (9)Section 4: System Maintenance (9)Section 5: System Troubleshooting (10)Section 6: System Specifications (11)Section 7: Parts and Accessories (11)The Warranty (13)DOCUMENTATION CONVENTIONS This uses the following conventions to present information:An exclamation point icon indicates a WARNING of a situationor condition that could lead to personal injury or death. Youshould not proceed until you read and thoroughly understand theWARNING message.WARNINGCAUTIONA raised hand icon indicates CAUTION information that relates toa situation or condition that could lead to equipment malfunctionor damage. You should not proceed until you read and thoroughlyunderstand the CAUTION message.A note icon indicates NOTE information. Notes provide additionalor supplementary information about an activity or concept.NOTESection 1: System DescriptionFunction and TheoryThe Geotech 4-20mA Display is a display for 4-20mA sensors. Specifically designed for harsh environments, the LED screen displays clear pressure or water level read outs while the sensor is attached. The display can be easily reprogrammed through the interface to accommodate a variety of sensors.System ComponentsPower Switch DisplayAC Input (Charging plug) Battery Status Signal Input(Sensor Connection)EnclosureSection 2: System InstallationWiring the transducer1. Open the connector.2. Remove all internal components of the connector.3. Slide the components separately over the cable.4. Ensure 1/8” of the cable is past the rubber part of the strain relief.5. Wire cable to the connector using the following diagram+ VDCmA Signal Return Ground/Shielding WireFigure 1-16. Completely re-assemble the connector.7. Plug the 4-20mA transducer into the “4-20mA signal input” on the control panel The transducer is now be ready to use with the 4-20mA Display.The 4-20mA display comes pre-set from Geotech to operate with a 0-30 PSI transducer and display PSI. If a different range is used (i.e. 0-50PSI) or you would like the display to show water level, use the following steps to change the display.Setting Display Units1. Switch the ON/OFF switch to the ON position.∙If the transducer is plugged into the unit then the screen will display a 0 value.o EX 0.00; 0.01 etc.∙If the transducer is not plugged into the unit, then the screen will displaya negative value that corresponds with the PSI/FT setting of the unit.o EX: If the unit is scaled to display PSI for a 0-5PSI transducerthen the display will read a negative value of approximately -3.7when the transducer is not plugged in.2. Press the MENU key to enter Programming mode.3. Press ACK key to access the Setup menu.4. Press the ACK key to access the Input menu5. Select 4-20mA and press the ACK key to confirm the selection input.∙This is the default option. If 4-20mA is not the default, press the MAX key to scroll through the choices.6. Press the ACK key to access the Decimal Point menu.7. Select the decimal place by pressing the MAX key.∙PSI decimal placement: ddd.d∙FEET decimal placement: ddd.d8. Press the ACK key to confirm input selection9. Press the ACK key to enter the Program menu.10. Press the ACK key to enter the Scale menu.11. Press the ACK to access the Input 1 menu.∙This input represents 0% of the process variable.∙The default value of 4.00mA should be sufficient for most applications.12. Press the ACK key to accept.13. Press the ACK key to access Display 1.∙This is the value that will be displayed on the meter when the input is 4mA∙The display will read “0” at this input.14. Press the ACK key to enter Input 2.∙The default input value of 20.00 for input 2 should be sufficient.15. Press the ACK to accept this value.16. Press the ACK key to enter Display 2.17. At this point it will be determined if the meter will display PSI or Feet.If the meter is to display in PSI then set the display number to the max PSIrating on the sensor using step #18.Ex. For a 0-30psi sensor, set the display to 30.If the meter is to display in Feet then determine the max depth by using thefollowing calculation:FtMax= 2.31 x (Pressure rating)EX: If a 0-15PSI sensor is being used, then the equation will be:FtMax = 2.31 x 15FtMax = 34.65ftSet the display number to the calculated FtMax using step #18.18. Enter the desired number in the Display 2 screen by pressing the RESET keyto select the digit (the selected digit is brighter than the others are). Press theMAX key to increment the digits. Once the number is set, press the ACK keyto accept the input.19. Press the MENU key to return to run mode.Section 3: System OperationSystem will display reading while powered ON.The battery depletes after approximately 8 hours.Recharge the system by turning the ON/OFF switch to the OFF position, unplug the transducer, and plug in the power cable (provided with the unit) until the charging light turns green.Quick Start Guide1) Plug in the wired transducer. Ensure wiring matches Figure 1-12) Turn the unit on with the ON/OFF switch.3) Ensure to set the desired display units using steps 1-19 from the installationsection.4) The unit is now ready for use.Section 4: System MaintenanceClean faceplate and case with mild soaps as needed.Do not store in direct sunlight.Charge battery before long-term storageSection 5: System TroubleshootingProblem: Display not receiving a signal from the transducer.Solution: Verify wiring according to Figure 1-1Problem: No displaySolution: Power unit OFF and ON. If the screen remains blank, contact Geotech. Solution: Charge unit.Problem: Water in the enclosure.Solution: Open the faceplate by removing all 10 silver screws with a Philips screwdriver. Remove water from the enclosure. Wipe case and components with a dry cloth. Ensure case and components are completely dry before reassembling.Problem: Screen suddenly turns offSolution: The components may be too hot. Let it cool down before resuming.Check the power.Problem: Display is reading a negative number while the transducer is plugged into the unit.Solution: Check wiring. Ensure wiring matches Figure 1-1.Section 6: System SpecificationsLED Panel MeterDisplay Digit Height .56”, 4 digits, red LED(14.2mm)Display Category LED, Single Line Transmitter Power NoneOperating Temperature Range 32°F - 149°F (0°C - 65°C)Power 85-265 VAC, 90-265 VDCOutput Options 4-20 mAInput Current (4-20 mA), Voltage (0-10 V) Thermocouple,RTDAccuracy +/- 1%Display Intensity 8 user-selectable intensity levelsSpecial Features Sunlight readable displayEnclosureEnclosure 6 x 13.4 x 11.6 in. (18 x 48 x 35 cm)Enclosure Material Structural resinBattery Performance @ 70°F12V 9AH Battery Life 50,000 cyclesInternal Battery Life (2x 9V, alkaline)30,000 cyclesSection 7: Parts and AccessoriesDescription Part Number CORD, POWER, 6’ 7” (B)12070014 CONNECTOR, SERVICE, PT2X 7A23102, 8A6V121, SEA 12106022The WarrantyFor a period of one (1) year from date of first sale, product is warranted to be free from defects in materials and workmanship. Geotech agrees to repair or replace, at Geotech’s option, the portion proving defective, or at our option to refund the purchase price thereof. Geotech will have no warranty obligation if the product is subjected to abnormal operating conditions, accident, abuse, misuse, unauthorized modification, alteration, repair, or replacement of wear parts. User assumes all other risk, if any, including the risk of injury, loss, or damage, direct or consequential, arising out of the use, misuse, or inability to use this product. User agrees to use, maintain and install product in accordance with recommendations and instructions. User is responsible for transportation charges connected to the repair or replacement of product under this warranty.Equipment Return PolicyA Return Material Authorization number (RMA #) is required prior to return of any equipment to our facilities, please call our 800 number for appropriate location. An RMA # will be issued upon receipt of your request to return equipment, which should include reasons for the return. Your return shipment to us must have this RMA # clearly marked on the outside of the package. Proof of date of purchase is required for processing of all warranty requests.This policy applies to both equipment sales and repair orders.FOR A RETURN MATERIAL AUTHORIZATION, PLEASE CALL OURSERVICE DEPARTMENT AT 1-800-833-7958.Model Number: ________________Serial Number: ________________Date of Purchase: ________________Equipment DecontaminationPrior to return, all equipment must be thoroughly cleaned and decontaminated. Please make note on RMA form, the use of equipment, contaminants equipment was exposed to, and decontamination solutions/methods used. Geotech reserves the right to refuse any equipment not properly decontaminated. Geotech may also choose to decontaminate the equipment for a fee, which will be applied to the repair order invoice.Geotech Environmental Equipment, Inc.2650 East 40th Avenue Denver, Colorado 80205 (303) 320-4764 ● (800) 833-7958 ● FAX (303) 322-7242。

需求分析报告

1Component or System Description部件或系统描述1.1本说明书所覆盖的部件或系统的简要介绍。

本部分可以很简要，因为它仅包含帮助读者快速了解所说明内容的信息。

1.2应当提供一个上下文相关图来帮助确定被描述的部件或系统的定位。

使用USER-CASE图来描述。

1.3参考应当做成关联文档（例如建议，合同，项目编号）。

2Purchaser Requirements 客户需求2.1Summary 概要2.1.1本部分应当包括那些直接影响到客户使用本部件或系统的需求。

它分为两个部分，功能和特性。

1 )部件或系统的功能描述了什么可以做，例如，打印一个报表。

2 )部件或系统的特性提供了那些可以描述和评价系统质量的属性。

2.1.2每个段落（或段落组）应当包含一个参考来跟踪需求的出处。

每个句子或段落应当编号；无论何种情况每个编号的项目仅应当定义一个需求。

2.1.3每个段落（或段落组）应当指出它的重要程度，按以下方式分类：1）强制的：最基本的特征；没有它产品将不可用。

2）必需的：单独的非基本的特征，但是它们加在一起会影响产品的能力。

3）期待的：最好能有的特征；一个或多个这些特征被忽略也不会影响产品的能力。

2.2Purchaser-Related Functionality 客户要求的功能2.2.1Application Functionality 应用程序的功能1 )在系统或子系统一级，这一部分应当包含可用的应用程序所提供的功能的描述。

2 )在应用程序一级，这一部分细化应用程序必须做到的功能。

3 )功能应当用结构化的英语或适当的形式化的方法学来描述。

2.2.2Human Interface 人机界面1 )这一部分应当定义所需的菜单结构，屏幕/窗口设计，报表设计和其它操作/或管理界面。

在这一过程中，需求可能广泛地涉及已有的标准或产品。

2 )参考应当指向其它的说明书和标准。

2.2.3Data Types 数据类型这一部分应当包括对系统或应用程序中对用户有用的所有数据类型的描述，包括应用程序开发工具用到的或表单，显示，报表和输出用到的。

数字系统平台 - Digilent DIO4 输入输出模块说明书

D i g i l e n t D I O4P e r i p h e r a l B o a r d R e f e r e n c e M a n u a lRevision: August 11, 2004 246 East Main | Pullman, WA 99163(509) 334 6306 Voice and FaxOverviewThe DIO4 circuit board provides a low-cost, ready-made source for many of the most common I/O devices found in digital systems. It can be attached to a Digilent system board to create a circuit design platform capable of hosting a wide array of circuits. DIO4 features include:• A 4-digit seven segment LED display; •8 individual LEDs;• 4 pushbuttons;•8 slide switches;•3-bit VGA port;•PS/2 mouse or keyboard port. Functional DescriptionThe DIO4 can be attached to Digilent system boards to quickly and easily add several useful I/O devices. The DIO4 draws power from the system board, and signals from all I/O devices are routed to individual pins on the system board connectors. These features allow the DIO4 to be incorporated into system-board circuits with minimal effort.All devices on the DIO4 use the 3.3V supply from the system board, except for the PS/2 port which needs a 5VDC supply (the DIO4 contains a 5VDC regulator). Signals coming from the PS/2 port are routed through level-shifting buffers to protect system boards that do not have 5V tolerant inputs.Power SuppliesThe DIO4 draws power from three pins on the 40-pin connectors: pin 37 supplies 3.3V; pin 39unregulated voltage (VU). VU is connected to a 5VDC LDO regulator to produce a 5VDC supply for the PS/2 interface. The 3.3V supply is used to drive all other I/O devices on the board. The DIO4 consumes 5-10mA from the VU supply, and 10-50mA from the 3.3V supply (depending on how many LEDs are illuminated).Seven-Segment LED displayThe DIO4 board contains a modular 4-digit, common anode seven-segment LED display. In a common anode display, the seven anodes of the LEDs forming each digit are connected to four common circuit nodes (labeled AN1 through AN4 on the DIO4). Each anode, and therefore each digit, can be independently turned on and off by driving these signals to a ‘0’ (on) or a ‘1’ (off). The cathodes of similar segments on all four displays are also connected together into seven common circuit nodes labeled CA through CG. Thus, each cathode for all four displays can be turned on (‘0’) and off (‘1’) independently.This connection scheme creates a multiplexed display, where driving the anode signals and corresponding cathode patterns of each digit in a repeating, continuous succession can create a 4-digit display. In order for each of the four digits to appear bright and continuously illuminated, all four digits should be driven once every 1 to 16ms (for a refresh frequency of 1KHz to 60Hz). For example, in a 60Hz refresh scheme, each digit would be illuminated for ¼ of the refresh cycle, or 4ms. The controller must assure that the correct cathode pattern is present when the corresponding anode signal is driven. To illustrate the process, if AN1 is driven low while CB and CC are driven low, then a “1” will be displayed in digit position 1. Then, if AN2 is driven low while CA, CB and CC are driven low, then a “7” will be displayed in digit position 2. If AN1 and CB, CC are driven for 4ms, and then AN2 and CA, CB, CC are driven for 4ms in an endless succession, the display will show “17” in the first two digits. An example timing diagram is provided below.Discrete LEDsEight individual LEDs are provided for circuit outputs. The LED cathodes are tied to GND via 270-ohm resistors, and the LED anodes are driven from a 74HC373. The ‘373 allows LED data to be latched on the DIO4, so that theLD# signals from the system board do not need to be driven continuously (the LD# signals use connector pins that are used in the “system bus” on some Digilent boards). If the system bus is not needed, then the LDG signal can be tied high.LD #LDGButton InputsThe DIO4 contains 4 N.O. (normally open) pushbuttons. Button outputs are connected to Vdd via a 4.7K resistor. When the button is pressed, the output is connected directly to GND. This results in a logic signal that is low only while the button is actively pressed, and high at all other times. The buttons are debounced with an RC filter and Schmidt-trigger inverter as shown in the figure below. This circuit creates a logic high signal when the button is pressed. The debounce circuit provides ESD protection and creates a signal with clean edges, so the BTN# signals can be used as clock signals if desired.BTN#Switch InputsThe eight slide switches on the DIO4 can be used to generate logic high or logic low inputs to the attached system board. The switches exhibit about 2ms of bounce, and no active debouncing circuit is employed. A 4.7K-ohm series resistor is used for nominal input protection.PS2 PortThe DIO4 board includes a 6-pin mini-DIN connector that can accommodate a PS2 mouse or PS2 keyboard connection. A 5VDC regulator and voltage-mapping buffers are provided on the board to interface lower voltage system boards with keyboards and/or mice.PS2 ConnectorBottom-uphole patternPin DefinitionsPin Function1 Data2 Reserved3 GND4 Vdd5 Clock6 ReservedBoth the mouse and keyboard use a two-wire serial bus (including clock and data) to communicate with a host device, and both drive the bus with identical signal timings. Both use11-bit words that include a start, stop and odd parity bit, but the data packets are organized differently, and the keyboard interface allows bi-directional data transfers (so the host device can illuminate state LEDs on the keyboard). Bus timings are shown below. The clock and data signals are only driven when data transfers occur, and otherwise they are held in the “idle” state at logic ‘1’. The timings define signal requirements for mouse-to-host communications and bi-directional keyboard communications.TCLKTKeyboardThe keyboard uses open collector drivers so that either the keyboard or an attached host device can drive the two-wire bus (if the host device will not send data to the keyboard, then the host can use simple input-only ports).PS2-style keyboards use scan codes to communicate key press data (nearly all keyboards in use today are PS2 style). Each key has a single, unique scan code that is sent whenever the corresponding key is pressed. If the key is pressed and held, the scan code will be sent repeatedly once every 100ms or so. When a key is released, a “F0” key-up code is sent, followed by the scan code of the released key. If a key can be “shifted” to produce a new character (like a capital letter), then a shift character is sent in addition to the original scan code, and the host device must determine which character to use. Some keys, called extended keys, send an “E0” ahead of the scan code (and they may send more than one scan code). When an extended key is released, an “E0 F0” key-up code is sent, followed by the scan code. Scan codes for most keys are shown in the figure below.A host device can also send data to the keyboard. Below is a short list of some often-used commands.ED Set Num Lock, Caps Lock, and Scroll Lock LEDs. After receiving an “ED”, the keyboardreturns an “FA”; then the host sends a byte toset LED status: Bit 0 sets Scroll Lock; bit 1 setsNum Lock; and Bit 2 sets Caps lock. Bits 3 to 7are ignored.EE Echo. Upon receiving an echo command, the keyboard replies with “EE”.F3 Set scan code repeat rate. The keyboard acknowledges receipt of an “F3” by returning an“FA”, after which the host sends a second byteto set the repeat rate.FE Resend. Upon receiving FE, the keyboard re-sends the last scan code sent.FF Reset. Resets the keyboard.The keyboard should send data to the host only when both the data and clock lines are high (or idle). Since the host is the “bus master”, the keyboard should check to see whether the host is sending data before driving the bus. To facilitate this, the clock line can be used as a “clear to send” signal. If the host pulls the clock line low, the keyboard must not send any data until the clock is released (host-to-keyboard data transmission will not be dealt with further here).The keyboard sends data to the host in 11-bit words that contain a ‘0’ start bit, followed by 8-bits of scan code (LSB first), followed by an odd parity bit and terminated with a ‘1’ stop bit. The keyboard generates 11 clock transitions (at around 20 - 30KHz) when the data is sent, and data is valid on the falling edge of the clock.MouseThe mouse outputs a clock and data signal when it is moved; otherwise, these signals remain at logic ‘1’. Each time the mouse is moved, three 11-bit words are sent from the mouse to the host device. Each of the 11-bit words contains a ‘0’ start bit, followed by 8 bits of data (LSB first), followed by an odd parity bit, and terminated with a ‘1’ stop bit. Thus, each data transmission contains 33 bits, where bits 0, 11, and 22 are ‘0’ start bits, and bits 11, 21, and 33 are ‘1’ stop bits. The three 8-bit data fields contain movement data as shown below. Data is valid at the falling edge of the clock, and the clock period is 20 to 30KHz.The mouse assumes a relative coordinate system wherein moving the mouse to the right generates a positive number in the X field, and moving to the left generates a negative number. Likewise, moving the mouse up generates a positive number in the Y field, and moving down represents a negative number (the XS and YS bits in the status byte are the sign bits – a ‘1’ indicates a negative number). The magnitude of the X and Y numbers represent the rate of mouse movement – the larger the number, the faster the mouse is moving (the XV and YV bits in the status byte are movement overflow indicators – a ‘1’ means overflow has occurred). If the mouse moves continuously, the 33-bit transmissions are repeated every 50ms or so. The L and R fields in the status byte indicate Left and Right button presses (a ‘1’ indicates the button is being pressed).timing information is provided as an example of how a VGA monitor might be driven in 640 by 480 mode. For more precise information, or for information on higher VGA frequencies, refer to document available at the VESA website (or experiment!).VGA system timingCRT-based VGA displays use amplitude modulated, moving electron beams (or cathode rays) to display information on a phosphor-coated screen. LCD displays use an array of switches that can impose a voltage across a small amount of liquid crystal, thereby changing light permitivity through the crystal on a pixel-by-pixel basis. Although the following description is limited to CRT displays, LCD displays have evolved to use the same signal timings as CRT displays (so the “signals” discussion below pertains to both CRTs and LCDs).CRT displays use electron beams (one for red, one for blue and one for green) to energize the phosphor that coats the inner side of the display end of a cathode ray tube (see drawing below). Electron beams emanate from “electron guns”, which are a finely pointed, heated cathodes placed in close proximity to a positively charged annular plate called a “grid”. The electrostatic force imposed by the grid pulls away rays of energized electrons as current flows into the cathodes. These particle rays are initially accelerated towards the grid, but they soon fall under the influence of the much larger electrostatic force that results from the entire phosphor coated display surface of the CRT being charged to 20kV (or more). The rays are focused to a fine beam as they pass through the center of the grids, and then they accelerate to impact on the phosphor coated display surface. The phosphor surface glows brightly at the impact point, and the phosphor continues to glow for several hundred microseconds after the beam is removed. The larger the current fed into the cathode, the brighter the phosphor will glow. Between the grid and the display surface, the beam passes through the neck of the CRT where two coils of wire produce orthogonal electromagnetic fields. Because cathode rays are composed of charged particles (electrons), they can be deflected by these magnetic fields. Current waveforms are passed through the coils to produce magnetic fields that interact with the cathode rays and cause them to transverse the display surface in a “raster” pattern, horizontally from left to right and vertically from top to bottom. As the cathode ray moves over the surface of the display, the current sent to the electron guns can be increased or decreased to change the brightness of the display at the cathode ray impact point.Information is only displayed when the beam is moving in the “forward” direction (left to right and top to bottom), and not during the time the beam is reset back to the left or top edge of the display. Much of the potential display time is therefore lost in “blanking” periods when the beam is reset and stabilized to begin a new horizontal or vertical display pass.The size of the beams, the frequency at which the beam can be traced across the display, and the frequency at which the electron beam can be modulated determine the display resolution. Modern VGA displays can accommodate different resolutions, and a VGA controller circuit dictates the resolution by producing timing signals to control the raster patterns. The controller must produce synchronizing pulses at 3.3V (or 5V) to set the frequency at which current flows through the deflection coils, and it must ensure that video data is applied to the electron guns at the correct time. Raster video displays define a number of “rows” that corresponds to the number of horizontal passes the cathode makes over the display area, and a number of “columns” that corresponds to an area on each row that is assigned to one “picture element” or pixel. Typical displays use from 240 to 1200 rows, and from 320 to 1600 columns. The overall size of a display, and the number of rows and columns determines the size of each pixel. Video data typically comes from a video refresh memory, with one or more bytes assigned to each pixel location (the DIO4 board uses 3-bits per pixel). The controller must index into video memory as the beams move across the display, and retrieve and apply video data to the display at precisely the time the electron beam is moving across a given pixel.A VGA controller circuit must generate the HS and VS timings signals and coordinate the delivery of video data based on the pixel clock. The pixel clock defines the time available to display 1 pixel of information. The VS signal defines the “refresh” frequency of the display, orthe frequency at which all information on the display is redrawn. The minimum refresh frequency is a function of the display’s phosphor and electron beam intensity, with practical refresh frequencies falling in the 50Hz to 120Hz range. The number of lines to be displayed at a given refresh frequency defines the horizontal “retrace” frequency. For a 640-pixel by 480-row display using a 25MHz pixel clock and 60 +/-1Hz refresh, the signal timings shown in the table below can be derived. Timings for sync pulse width and front and back porch intervals (porch intervals are the pre- and post-sync pulse times during which information cannot be displayed) are based on observations taken from VGA displays. A VGA controller circuit decodes the output of a horizontal-sync counter driven by the pixel clock to generate HS signal timings. This counter can be used to locate any pixel location on a given row. Likewise, the output of a vertical-sync counter that increments with each HS pulse can be used to generate VS signal timings, and this counter can be used to locate any given row. These two continually running counters can be used to form an address into video RAM. No time relationship between the onset of the HS pulse and the onset of the VS pulse is specified, so the designer can arrange the counters to easily form video RAM addresses, or to minimize decoding logic for sync pulse generation.Connector pinouts are shown below. Separately available tables show pass-through connections for the devices on the DIO4 board when it is attached to various system boards. Note that connectors on system boards and peripheral boards use the same numbering scheme – that is, if the board is held with the component side towards you and the connectors pointing up, then pin #1 is always on the bottom left corner of the connector. This means that when a peripheral board is plugged into a system board, the numbering patterns are mirrored. Pin #1 on the peripheral board mates with pin #39 on the system board, peripheral board pin #2 mates with system pin #40, etc. Note that odd pin number mating pairs add to 40, and even pin number mating pairs add to 42 (so pin 36 mates with pin 6, pin 27 mates with pin 13, etc.).DIO4 Expansion Connector PinoutP1 Signal Dir P2 Signal Dir1 nc 1 nc2 nc 2 nc3 nc 3 nc4 nc 4 nc5 nc 5 nc6 nc 6 nc7 nc 7 nc8 nc 8 nc9 nc 9 nc10 nc 10 nc11 nc 11 nc12 nc 12 nc13 AN3 in 13 VS in14 AN4 in 14 HS in15 AN1 in 15 GRN in16 AN2 in 16 RED in17 BTN4 out 17 PS2D bidi18 BTN5 out 18 BLU in19 nc 19 BTN2 out20 BTN3 out 20 PS2C bidi21 LED8 in 21 DP in22 LEDG in22 BTN1 out23 LED7 in23 CG in24 nc 24 SW8 out25 LED6 in 25 CF in26 nc 26 SW7 out27 LED5 in 27 CE in28 nc 28 SW6 out29 LED4 in 29 CD in30 nc 30 SW5 out31 LED3 in 31 CC in32 nc 32 SW4 outout33 LED2 in 33 CB in34 nc 34 SW3 out35 LED1 in 35 CA in36 nc 36 SW2 out37 VCC33 37 VCC3338 nc 38 SW139 GND 39 GND40 VU 40 VU。

用英语讲中国故事评分表

用英语讲中国故事评分表1When it comes to scoring the act of telling Chinese stories in English, there are several crucial aspects to consider. Firstly, the completeness of the story content holds significant weight. A fully developed and coherent story that encompasses all essential elements deserves a high score. For instance, if the story has a clear beginning, middle, and end, along with well-defined characters and a logical plot progression, it can earn up to 80 points!Secondly, the accuracy of English expression is of paramount importance. Flawless grammar, proper vocabulary usage, and accurate pronunciation should be taken into account. A near-perfect performance in this aspect could earn up to 70 points! How amazing would it be to have such precise language skills?The fluency of the narration also matters a lot. Smooth delivery without frequent pauses or stumbles can add to the score. If the teller can maintain a consistent pace and rhythm, it might be worth up to 60 points! Isn't it important to have a seamless flow?Last but not least, the conveyance of emotions is essential. Can the teller make the audience feel the joy, sadness, or excitement in the story?A powerful emotional connection can earn up to 50 points! Wow, imaginethe impact of a truly touching story!In conclusion, a successful telling of a Chinese story in English depends on the combination of these factors, each contributing to the final score in its own way. So, let's strive for excellence in every aspect!2When it comes to scoring a performance of telling Chinese stories in English, several key dimensions and points need to be taken into account. Firstly, the degree of representation of Chinese cultural elements is of paramount importance! How accurately and vividly the storyteller presents the unique aspects of Chinese culture? This could include traditional customs, historical events, or philosophical concepts. A rich and authentic portrayal would surely earn high marks.Secondly, the standard of pronunciation is crucial! Clear and accurate pronunciation helps convey the story smoothly and enhances the audience's understanding. A flawless pronunciation would be highly appreciated!Another significant aspect is the interaction effect with the audience. Does the storyteller manage to engage the audience, evoke their emotions, and create a connection? Can they respond effectively to the audience's reactions and questions? A strong interaction would undoubtedly add charm to the performance.In conclusion, a perfect score should be based on a comprehensive assessment of these aspects. Only when all these elements are wellbalanced and presented outstandingly can a telling of Chinese stories in English be truly remarkable and unforgettable!3When it comes to evaluating the performance of telling Chinese stories in English, there are several key aspects and corresponding scores to consider. Firstly, the innovativeness of the story holds significant weight.A truly original and creative story that presents a fresh perspective on Chinese culture or history could earn up to 50 points! How fascinating is that? Secondly, the use of body language plays an important role. Clear and appropriate gestures, expressions, and movements that enhance the delivery of the story can contribute 30 points. Isn't that crucial for engaging the audience? Moreover, the display of traditional Chinese values is also essential. If the story manages to convey these values in a profound and meaningful way, it can gain another 20 points. What a remarkable way to showcase our rich heritage! So, for example, if a story is highly innovative, with excellent body language and a profound presentation of traditional values, it would likely receive a high score and leave a lasting impression on the listeners. Isn't this a comprehensive and fair scoring system?4When it comes to scoring the performance of telling Chinese stories in English, several crucial principles and indicators need to be considered.Firstly, the accuracy of the narration about Chinese historical events is of paramount importance! A precise and detailed account should be highly valued. If there are any significant errors or omissions, points would be deducted accordingly. Secondly, the infectiousness of the language used plays a vital role. A vivid and engaging expression that can touch the hearts of the audience deserves a high score! How well the storyteller conveys the emotions and charm of the story through words matters a lot. And then, the confidence level in stage performance cannot be ignored. A storyteller who stands on the stage with poise and self-assurance would undoubtedly leave a positive impression. A shaky and nervous presentation would, unfortunately, lead to a lower score. For instance, if a storyteller accurately describes a complex historical event with passionate and fluent language while showing great confidence on stage, they could receive a score as high as 90 or even above. However, if there are obvious mistakes in the historical facts, and the language is dull with a lack of confidence in the performance, the score might be only around 60.5When it comes to the scoring sheet for telling Chinese stories in English, there are several crucial aspects to consider! Firstly, the quality of the description of modern Chinese achievements plays a significant role. How vividly and accurately the narrator presents these achievements is of great importance. For example, if the storyteller can vividly describeChina's technological advancements and economic growth, it should score highly. Secondly, the educational significance of the story cannot be ignored. Does the story inspire the audience, convey positive values, and enhance their understanding of Chinese culture? This is a key point for scoring. Another important factor is the reasonableness of time control. If the storyteller can complete the narration within the prescribed time without rushing or leaving out important details, that's definitely a plus. Also, the fluency and accuracy of the English language used, as well as the presenter's expression and passion, all contribute to the final score. How wonderful it would be if every storyteller could master these points and tell Chinese stories in English perfectly! So, let's strive for that and make these stories shine on the global stage.。

瓶子检测培训petview_776

Training Manual for PET-View Type 776D.A.R.T.PET瓶子776 D.A.R.T.培训手册Table of Contents目录1SYSTEM DESCRIPTION 系统描述 (3)1.1O VERVIEW OF THE I NSPECTION U NITS: 检查装置概述： (3)1.2O THER C OMPONENTS IN THE S TRETCH B LOW M OULDER 拉伸吹塑的其他组成部分 (4)1.2.1Type Parameters 类型参数 (6)1.2.1.1Activation of the Units 激活单元 (6)1.3C AMERA U NITS 照相机 (6)1.3.1Adjustment of the Trigger 触发器的调节 (6)1.3.2Analyses 分析 (7)1.3.3Total Statistics 完整统计 (7)1.3.4Counter, Mould Number 计数器、模具编号 (13)1.3.5Switch Register, PLC 开关寄存器、PLC (15)1.3.5.1Signal Transmission 信号传输 (15)2SYSTEM DESCRIPTION 系统描述 (18)2.1S TATION D ESIGN AND C AMERA A DJUSTMENT 站点设计和照相机调整 (18)2.1.1Configuration 配置 (19)2.1.2Rough Centring 粗略定心 (21)2.1.3Rim Mark 边缘标记 (22)2.1.4Centring Unit 定心单元 (23)2.1.5Gate (Spraying Point) 注塑口（喷射点） (24)2.1.6Deviation 偏移 (25)2.1.7Haziness (Turbidity) 模糊不清（混浊） (26)2.1.8Crater 凹陷 (27)2.1.9Brightness 亮度 (28)3ANALYSIS 分析 (31)4SYSTEM DESCRIPTION 系统描述 (37)4.1S TATION D ESIGN AND C AMERA A DJUSTMENT 站点设计和照相机调整 (37)5ANALYSES 分析 (39)5.1F INE C ENTRING 精确定心 (39)5.2C ONTOUR 轮廓 (40)5.3F AULT A REAS 缺陷范围 (41)5.4B RIGHTNESS 亮度 (42)1 System Description 系统描述The PET container inspection system at the discharge of the Krones Contiform inspects newly blown containers. The system has a modular design and can comprise up to three units (sealing surface, base and side-wall inspection units). The results are displayed using a detailed statistics system with cavity allocation feature created in an individual controller. The Contiform rejection unit rejects the faulty containers. 位于克朗斯Contiform 卸料装置中的PET 瓶子检测系统可对新吹塑瓶进行检测。

java中nextline用法

java中nextline用法1. In Java, the `nextLine()` method is super useful for reading a whole line of text from the user. For example, I'm making a simple chat program. I want to let the user enter a full message. So, I use`Scanner` and `nextLine()`. It's like opening a door to let all the words in at once. "Hey, user! Enter your whole thought here. Scanner scanner = new Scanner(System.in); String message =scanner.nextLine(); Isn't it cool how it just grabs the entire line?"2. The `nextLine()` method in Java can be a real lifesaver when you're dealing with text input. Let's say we're creating a little story - making app. I ask the user for a line of the story. "You know, it's like asking for a piece of a jigsaw puzzle. Each line you get with`nextLine()` is a unique piece." Scanner input = newScanner(System.in); String storyLine = input.nextLine(); "Oh my, the possibilities are endless with this method!"3. Java's `nextLine()` has a basic but powerful use. Imagine you're making a diary - like application. You want the user to write down their daily thoughts. "Just think of `nextLine()` as a magic pen that can write down whatever the user wants to say in one go." Scanner sc = new Scanner(System.in); String diaryEntry = sc.nextLine(); "This method is just so handy, right?"4. `nextLine()` in Java is often used in console - based games. For instance, I'm creating a text - based adventure game. I need to get the player's decision as a whole line. "It's as if the method is a little messenger waiting to hear the player's fullmand." Scanner gameScanner = new Scanner(System.in); String playerDecision = gameScanner.nextLine(); "Wow, it makes the game interaction so much easier!"5. When ites to reading user - entered text in Java, `nextLine()` isa go - to. Suppose we're building a recipe - sharing app. I ask the user to enter a recipe step by step. "Using `nextLine()` is like having a friendly listener that records each line of the recipe without missing a word." Scanner recipeScanner = new Scanner(System.in); String recipeStep = recipeScanner.nextLine(); "Isn't it just amazing?"6. Java's `nextLine()` is great for getting user feedback in a simple survey application. I might say to the user, "Tell me your thoughts on our new product in one full line." It's like having a special box where the user can pour out all their opinions at once. Scanner surveyScanner = new Scanner(System.in); String feedback = surveyScanner.nextLine(); "Yay, it's so simple yet so effective!"7. In a Java - based poetry - writing program, `nextLine()` plays a crucial role. "You see, if I want the poet (the user) to write a line of their poem, `nextLine()` is like a blank page waiting to be filled with beautiful words." Scanner poetScanner = new Scanner(System.in); String poemLine = poetScanner.nextLine(); "How wonderful is that?"8. Let's say we're making a note - taking app in Java. The`nextLine()` method is perfect for getting each note as aplete line. "Think of it as a little helper that grabs each thought as a whole, not just bits and pieces." Scanner noteScanner = new Scanner(System.in); String note = noteScanner.nextLine(); "Fantastic, isn't it?"9. Java's `nextLine()` can be used in a password - entry scenario. "Hey, you (the user). Enter your password as a whole line. It's like putting your secret key into a special lock all at once." Scanner passScanner = new Scanner(System.in); String password = passScanner.nextLine(); "This method gives a sense of security, don't you think?"10. When creating a Java application for taking down book quotes, `nextLine()` is essential. "Imagine you're holding a book and want to type out a great quote. `nextLine()` is like a digital bookmark that saves the whole line." Scanner quoteScanner = newScanner(System.in); String bookQuote = quoteScanner.nextLine(); "So cool, right?"11. In a Java - based song - writing program, `nextLine()` is really handy. "You, the songwriter, can enter a line of lyrics all at once. It's like a musical note waiting to be part of a beautiful melody." Scanner songScanner = new Scanner(System.in); String lyricLine = songScanner.nextLine(); "Amazing, isn't it?"12. Java's `nextLine()` is used in a simple language - learning app. "I say to the learner, 'Tell me a sentence in the new language in one line.' It's like a language bridge that takes in the whole sentence at once." Scanner languageScanner = new Scanner(System.in); String languageSentence = languageScanner.nextLine(); "Great, huh?"13. Suppose we're building a Java - based interview - simulation app. The `nextLine()` method is used to get the interviewee's full answer. "It's like a friendly interviewer waiting patiently for the whole response." Scanner interviewScanner = new Scanner(System.in); String answer = interviewScanner.nextLine(); "Neat, right?"14. In a Java application for writing down dreams, `nextLine()` is a must - have. "You know, when you wake up and want to record your dream, `nextLine()` is like a dream catcher that gets the whole description in one go." Scanner dreamScanner = newScanner(System.in); String dreamDescription = dreamScanner.nextLine(); "How awesome is that?"15. Java's `nextLine()` can be used in a movie - review app. "Hey, movie - goer! Enter your full review in one line. It's like sharing your entire movie - going experience in one shot." Scanner reviewScanner = new Scanner(System.in); String movieReview = reviewScanner.nextLine(); "Pretty cool, don't you think?"16. When creating a Java - based to - do list app, `nextLine()` is used to get each task as aplete line. "Think of it as a task - collector that grabs each to - do item as a whole." Scanner toDoScanner = new Scanner(System.in); String task = toDoScanner.nextLine(); "It's so useful, isn't it?"17. In a Java - based joke - sharing app, `nextLine()` is useful for getting the whole joke. "I say to the joker, 'Tell me your joke in one line.' It's like a laughter box waiting to be filled with the whole joke." Scanner jokeScanner = new Scanner(System.in); String joke = jokeScanner.nextLine(); "Hilarious, right?"18. Java's `nextLine()` is used in a simple horoscope - writing app. "You, the astrologer, can enter a line of the horoscope all at once. It's like a star - guided pen writing a celestial message." Scanner horoscopeScanner = new Scanner(System.in); String horoscopeLine = horoscopeScanner.nextLine(); "Fascinating, isn't it?"19. Suppose we're building a Java - based riddle - sharing app. The `nextLine()` method is used to get the whole riddle. "It's like a mystery box waiting to be opened with the whole riddle inside." Scanner riddleScanner = new Scanner(System.in); String riddle = riddleScanner.nextLine(); "Intriguing, don't you think?"20. In a Java - based prayer - writing app, `nextLine()` is used to get each line of the prayer. "Think of it as a spiritual notepad that takes in each line of the prayer as a whole." Scanner prayerScanner = new Scanner(System.in); String prayerLine = prayerScanner.nextLine(); "Peaceful, isn't it?"。

冷库运行确认

Operation Protocol for 1022 Cold Storage Room1022冷库运行方案TABLE OF CONTENT目录1.PURPOSE 目的 (4)2.SCOPE 范围 (4)3.SYSTEM DESCRIPTION 系统描述 (4)4.RESPONSIBILITY DESCRIPTION 职责描述 (5)5.ABBREVITION 缩写 (6)6.REFERENCE 参考资料 (6)7.TESTING ITEMS AND METHOD 测试的项目和方法 (7)7.1Personnel Training 人员培训 (8)7.2Prerequisites Verification 先决条件确认 (10)7.3Documentation Verification 文件确认 (12)7.4Test Equipment Calibration Verification 测试用仪器仪表校准确认 (14)7.5HMI Verification 主机界面确认 (17)7.6Input /Output Verification 输入输出确认 (19)7.7Access control system Verification门禁系统确认 (21)7.8User Authority Verification用户权限确认 (23)7.9Refrigeration System Functions Verification制冷系统功能确认 (25)7.10Operation parameters Verification 运行参数确认 (29)7.11Power interruption Verification 断电确认 (33)7.12Alarm function Verification 报警功能确认 (35)7.13No-load Temperature Distribution Verification 空载温度分布的确认 (38)7.14Opening and Power-off Insulation Verification 开门与断电保温的确认 (41)8.DEVIATION HANDLING 偏差处理 (43)9.ATTACHMENT LIST 附件清单 (47)10.OQ CONCLUSION 结论 (49)11.FINAL APPROVAL 最后批准 (49)1.PURPOSE 目的The purpose of this document is to provide guidance for the OQ for 1022 cold storage room and then provide documented evidence that the equipment is operated properly as specified.本文件的目的是为1022冷库的运行确认提供指导，并为设备的正确运行提供文件支持。

PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY

DETAIL DESIGN OF SHORE POWER APPLICATION ENGINEERING FOR BOZHONG AND KENLI OILFIELDS JOB NO. 20ZB-DD10C O S I G ND I S C I P L I N ES I G N A T U R E D A T EPROCESSPAGE 1 OF 10ISSUED FOR APPROVAL REV. DATE DESCRIPTION BY CH ‘K. REV’ W. EXAM. APPRO. CLIENTPROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY (CN-USP-BHB-BZ19-6) CNOOC ChinaLtd. TianjinDOCUMENT NO..CERTIFI. NO.Document No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5CONTENTS1INTRODUCTION (3)1.1Project Description (3)1.2Facilities Description (3)1.3Purpose/objectives (3)2PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY (4)2.1Emergency Oil System (4)2.1.1Emergency Oil Header (5)2.1.2 Emergency Oil Tank (5)2.1.3Emergency Oil Booster Pumps (6)2.1.4Open Drain Header (7)2.2Reclaim Water System (8)2.2.1Reclaim Water Tank (8)2.2.2Reclaim Water Pumps (9)Document No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.51 INTRODUCTION1.1 Project DescriptionShore power application engineering for Bozhong and Kenli oilfields plan to build a new 220kV land substation in Dongying Port Economic Development Zone, Dongying City, Shandong Province (220kV Boyou substation), and build 3 new 220kV offshore electricity power platforms respectively located in Bozhong 19-6 area, Bozhong 28/34 area and Bozhong 35-2 area (BZ19-6 EPP、BZ34-1 EPP、BZ35-2 EPP), and build a new 110kV offshore electricity power platform in Kenli 10-1 area (KL10-1 EPP).1.2 Facilities DescriptionThe process system in this report consists of the following:•Emergency Oil System•Reclaim Water SystemA general arrangement of the field layout is shown in Figure 1-1.1.3 Purpose/objectivesThis document provides the process system description and design philosophy for offshore platforms.Document No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5Figure 1-1 Field Layout2 PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY2.1 Emergency Oil SystemThe emergency oil system is used to collect fire-fighting water, radiators funnel and deck funnel rain water, emergency oil from transformer room and reactor room under maintenance or in accident. The liquid flows into emergency oil tank. If the duration of heavy rain is beyond 5 minutes, radiators funnel and deck funnel rain water shall be directly discharged overboard. The water in emergency oil tank will be pumped to BZ19-6 CEPA closed drain vessel by emergency oil booster pumps.Major equipment in the emergency oil system is shown as below:Emergency Oil Tank (EPP-T-3501)Document No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5•Emergency Oil Tank Electric Heater (EPP-EH-3501)•Emergency Oil Booster Pump Filters (EPP-F-3501A/B)•Emergency Oil Booster Pumps (EPP-P-3501A/B)ReferencePFD: DD-DWG-EPP-PR-0351P&ID: DD-DWG-EPP-PR-3501~35032.1.1 Emergency Oil HeaderFour main emergency oil headers are provided on platform, one to collect the fluids from 1# main transformer room and 1# main transformer radiator oily funnel, the second one to collect the fluids from 2# main transformer room and 2# main transformer radiator oily funnel, the third one to collect the fluids from 1# reactor room and 1# reactor radiator oily funnel, the fourth one to collect the fluids from 2# reactor room and 2# reactor radiator oily funnel.Liquid seal is provided on certain location for each emergency oil header. The water seal pipe shall be located for easy access and nearby the main pipe as close as possible.2.1.2 Emergency Oil TankDESCRIPTIONThe main function of emergency oil tank is to collect the liquid from emergency oil header and open drain header.An over flow line fixing with a magnetic flow indicating transmitter (FIT-3501) is provided on the emergency oil tank. Emergency oil tank electric heater (EPP-EH-3501) is provided on the emergency oil tank to prevent freezing, and the duty of the heater is 15kW.Level indicating transmitter (LIT-3501) provides the level signal to PCS and MCC for controlling on/off mode of emergency oil tank booster pumps (EPP-P-3501A/B).Document No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5 Level indicating transmitter (LIT-3502) provides level low low trip signals to ESD for under level protection and LAHH-3502 is only alarm.Local temperature indicator (TI-3503) is provided to monitor the performance. Temperature indicating transmitter (TIT-3501) provides temperature high/low signals to PCS. Temperature indicating transmitter (TIT-3501) provides temperature control signal (TIC-3501) by starting and stopping the emergency oil tank electric heater (EPP-EH-3501). Temperature indicating transmitter (TIT-3502) provides temperature high high signals to ESD for over temperature alarm. TSHH-3501 provides signal to shut down the heater for high high temperature.DESIGN PHILOSOPHYThe operating and design parameters are given as below:Emergency Oil Tank (EPP-T-3501)Size: 8000mm(L)x4600mm(W)x3500mm(H)Capacity: 90m3 (net)Design pressure/ temperature: -0.5~2.7kPaG (top)/135°COperating pressure/temperature: ATM./5~105°CEmergency Oil Tank Electric Heater (EPP-EH-3501)Duty: 15kW2.1.3 Emergency Oil Booster PumpsDESCRIPTIONThe water in the emergency oil tank will be discharged to BZ19-6 CEPA closed drain system by emergency oil booster pumps (EPP-P-3501A/B). The emergency oil booster pump is centrifugal pump. And the oil in the emergency oil tank should be transferred through international shore connection.The emergency oil booster pumps operate at on/off model, which are controlledDocument No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5by level signal from LIC-3501 on emergency oil tank. The pumps are started/stopped manually through local hand switches (HS-3502A/B) and can be stopped by the signal from center control room by hand switches (HS-3501A/B). The working status of the emergency oil booster pumps are displayed by status lights (XL-3501A/B, 3502A/B, 3503A/B and 3504A/B) at local and PCS respectively.DESIGN PHILOSOPHYThe operating and design parameters are given as below:Emergency Oil Booster Pump Filters (EPP-F-3501A/B)Capacity: 10 m3/h (each)Design pressure/temperature: 800kPaG/135°COperating pressure/temperature: ATM./5~105°CMesh: 60 (confirmed by pump vendor)Emergency Oil Booster Pumps (EPP-P-3501A/B)Capacity: 10 m3/h (each)Operating pressure/temperature: ATM./5~105°C (suction)450kPaG /5~105°C (discharge)2.1.4 Open Drain HeaderOpen drain header is used to collect liquid from AHU units, foam bladder vessel, electric driven pedestal crane and funnels rain water on helideck.Liquid seal is provided on certain location for open drain header. The water seal pipe shall be located for easy access and nearby the main pipe as close as possible.Normally, liquid from open drain header shall be routed into emergency oil tank. Open drain headers, which receive liquid from deck funnels, skids/cofferdams. After heavy rain last 5 minutes, the rainwater could be directly discharged overboard by opening the valves on the bypass lines to overboard and the valves on the inlet line ofDocument No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5 emergency oil tank should be closed.2.2 Reclaim Water SystemThe reclaim water system is used to collect water from high pressure water mist system. The liquid flows into reclaim water tank. Vent with insect screen will be provided on the tank to allow it to breathe. The reclaim water tank electric heater (EPP-EH-4201) on the reclaim water tank (EPP-T-4201) protects the tank against freeze off. The reclaim water will be pumped to the utility station by the reclaim water pump (EPP-P-4201).The fresh water from BZ19-6 CEPA will be pumped to EPP and used to utility station.The potable water which sterilized in BZ19-6 CEPA will be transported to EPP and used to eyewasher.Major equipment in the reclaim water system is shown as below:•Reclaim Water Tank (EPP-T-4201)•Reclaim Water Tank Electric Heater (EPP-EH-4201)•Reclaim Water Pump (EPP-P-4201)ReferencePFD: DD-DWG-EPP-PR-0421P&ID: DD-DWG-EPP-PR-42012.2.1 Reclaim Water TankDESCRIPTIONThe main function of reclaim water tank is to collect the liquid from high pressure water mist system.An over flow line is provided on the reclaim water tank. Reclaim water tank electric heater (EPP-EH-4201) is provided on the reclaim water tank to preventDocument No.: DD-SPC-EPP-PR-1001 Rev. 0Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5 freezing, and the duty of the heater is 8kW.Level indicating transmitter (LIT-4201) provides level high/low signals to PCS.Local temperature indicator (TI-4201) is provided to monitor the performance. Temperature indicating transmitter (TIT-4201) provides temperature high/low signals to PCS. Temperature indicating transmitter (TIT-4201) provides temperature control signal (TIC-4201) by starting and stopping the reclaim water tank electric heater (EPP-EH-4201). TSHH-4201 provides signal to shut down the heater for high high temperature.DESIGN PHILOSOPHYThe operating and design parameters are given as below:Reclaim Water Tank (EPP-T-4201)Size: 4000mm(L)x2500mm(W)x3500mm(H)Capacity: 25m3 (net)Design pressure/ temperature: -0.5~2.7kPaG (top)/50°COperating pressure/temperature: ATM./5~36°CReclaim Water Tank Electric Heater (EPP-EH-4201)Duty: 8kW2.2.2 Reclaim Water PumpDESCRIPTIONThe water in the reclaim water tank will be discharged to utility station by reclaim water pump (EPP-P-4201). The reclaim water pump is centrifugal pump.The reclaim water pump is started/stopped manually through local hand switches (HS-4211) and can be stopped by the signal from center control room by hand switches (HS-4212). The working status of the reclaim water pump is displayed byDocument No.: DD-SPC-EPP-PR-1001 Rev. 0 Title: PROCESS SYSTEM DESCRIPTION AND DESIGN PHILOSOPHY 2022.1.5 status lights (XL-4211, 4212, 4213 and 4214) at local and PCS respectively.DESIGN PHILOSOPHYThe operating and design parameters are given as below:Reclaim Water Pump (EPP-P-4201)Capacity: 15 m3/hOperating pressure/temperature: ATM./5~36°C (suction)400kPaG /5~36°C (discharge)。

小学上册D卷英语第6单元自测题

小学上册英语第6单元自测题英语试题一、综合题(本题有100小题，每小题1分，共100分.每小题不选、错误，均不给分)1.What do we call the place where we go to buy groceries?A. MallB. Grocery storeC. ParkD. Library2.The chemical symbol for dubnium is _____.3.She is wearing a pretty ___. (necklace)4.What do you call the act of telling a story?A. NarrativeB. DescriptionC. ExpositionD. DialogueA5.My ___ (小猫) catches bugs in the summer.6.I enjoy _____ (reading/watching) movies.7.My grandma enjoys making __________ (传统美食).8.We celebrate my birthday with a ________ (蛋糕) and balloons. I invite my________ (朋友) over.9.The soup is _____ (hot/cold) today.10.The ancient Greeks made significant advancements in ________ (医学).11.What is the chemical symbol for sodium?A. NaB. SC. SnD. Si12.How many days are there in a week?A. FiveB. SixC. SevenD. Eight13.What do we call the circle around the Earth that is equally distant from the poles?A. EquatorB. TropicC. MeridianD. LatitudeA14.What do we drink to stay hydrated?A. SodaB. JuiceC. WaterD. TeaC15.The ______ is the smallest unit of matter.16.Which of these is a fruit?A. LettuceB. TomatoC. CarrotD. Potato17.How many planets are in our solar system?A. EightB. NineC. TenD. Eleven18.I like to play ______ (视频游戏).19.The _____ (环境影响) of deforestation is severe.20.The first President of the United States was elected in _______.21.The _______ has a strong smell.22.The city of Tarawa is the capital of _______.23.Which of these is a type of fish?A. SalmonB. ChickenC. BeefD. PorkA24.What do we call the weather phenomenon that brings heavy rain and strong winds?A. ThunderstormB. BlizzardC. HurricaneD. EarthquakeC25.The __________ (树皮) protects the tree from harm.26.Certain plants can provide food for both humans and ______. (某些植物可以为人类和动物提供食物。

人力资源专员的英语

人力资源专员的英语一、单词1. human resources- 释义：人力资源，指一个组织所拥有的能够被企业所用，且对价值创造起贡献作用的教育、能力、技能、经验、体力等的总称。

- 用法：常作名词短语使用，在句中可作主语、宾语等。

例如：The development of human resources is crucial for apany's long - term growth.（人力资源的开发对公司的长期发展至关重要。

）2. specialist- 释义：专家；专科医生。

在这里指专门从事人力资源工作的专员。

- 用法：可数名词。

可以说“a human resources specialist”（一名人力资源专员）。

例如：The human resources specialist is in charge of recruitment.（人力资源专员负责招聘工作。

）3. recruitment- 释义：招聘；招募。

- 用法：名词。

例如：The recruitment process needs to be more efficient.（招聘流程需要更高效。

）4. training- 释义：培训；训练。

- 用法：名词或动名词。

例如：The human resources specialist is responsible for staff training.（人力资源专员负责员工培训。

）或者They are training new employees.（他们正在培训新员工。

）5. selection- 释义：选择；挑选；选拔。

- 用法：名词。

例如：The selection of candidates is a very important part of the human resources work.（候选人的选拔是人力资源工作非常重要的一部分。

）6. performance- 释义：表现；绩效；性能。

伊顿用于控制电压应用的两极 UL 4 型避雷器数据表

T wo-pole UL Type 4 surge arresters for control voltage applicationsCatalog symbols:• BSPH2A_D_LV •BSPH2A_D_LVRDescription:Eaton’s Bussmann™ series two-pole UL Type 4 surge component acceptance surge arresters are for Type 3 applications. These modular surge arresters feature local easy ID™ visual status indication along with remote contact signaling. The unique module locking system fixes the protection module to the base. Modules can be easily replaced without tools by simply depressing the release buttons. Integrated mechanical coding between the base and protection module ensuresagainst installing an incorrect replacement module.Control voltage system arrestersThe features of these two-pole devices are for use in coordination with other upstream SPDs in UL 508A Applications*.•Surge arrester according to UL 1449 4th Edition, Type 4 Component Assembly for Type 3applications helps meet UL 508A requirements •Proven MOV and GDT hybrid technology for reliable surge protection•Module locking system with module release button make module replacement easy without tools•Remote signaling of all protection modules make status monitoring easy and accurate in any monitoring scheme•No upstream overcurrent protection necessary to make installation easier and more economical •Vibration and shock tested according to EN 60068-2 to withstand harsh environmentsRemote contact signalingThe three-pole terminal remote contact signaling has a floating changeover contact for use as a break or make contact, according to circuit concept.Specifications:System volts•24Vac/dc to 120Vac/dc (See ordering information table)System types•AC and DC control voltage systems up to 120Vac/dcAgency information• CE • CSA • KEMA • UL/cUL •RoHS complaintMounting•35mm DIN-RailWarranty•Five years* UL 1449 4th Edition not applicable to DC voltages.contactsignalingeasy ID™ local visual statusindication2011/65/EU2Technical Data 2057Effective December 20232-Pole UL Type 4 non-SCCR surge arresters for control voltage applications/bussmannseriesDimensions - mm:Module circuit diagram:Shown with optional remote contact signaling.Shown with optional remote contact signaling.MOVGas discharge tube (single)3Technical Data 2057Effective December 20232-Pole UL Type 4 non-SCCR surge arresters for control voltage applications /bussmannseriesOrdering information:Switching capacity (volts/amps)AC 250V / 0.5ADC250V / 0.1A, 125V / 0.2A, 75V / 0.5A Conductor ratings and cross-section area 60/75°C Max. 1.5mm 2 / 14AWG solid / flexibleOrdering informationOrder from catalog numbers above* Agency information not applicable to DC ratings.** S ee Bussmann series SPD limited warranty statement (3A1502) for details at /bussmannseries.UL Type 3 control voltage surge protective devices Technical Data 2057Effective December 2023Eaton1000 Eaton BoulevardCleveland, OH 44122Bussmann Division114 Old State RoadEllisville, MO 63021United States/bussmannseries© 2023 EatonAll Rights ReservedPrinted in USAPublication No. 2057 — BU-SB11750 December 2023Eaton, Bussmann and easy ID are valuabletrademarks of Eaton in the U.S. and othercountries. Y ou are not permitted to usethe Eaton trademarks without prior writtenconsent of Eaton.CSAKEMAFollow us on social media to get thelatest product and support information.For Eaton’s Bussmann seriesproduct information,call 1-855-287-7626 or visit:/bussmannseriesThe only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.。

描述用英语怎么说

描述用英语怎么说描述指描写，运用各种修辞手法对事物进行形象化的阐述。

那么你知道描述用英语怎么说吗?下面来学习一下吧。

描述英语说法1：describe描述英语说法2：depict描述英语说法3：characterization描述的相关短语：输入描述 Nutch ; Input Description职位描述Job Descriptions ; Position Description ; JD ; Job Deerrorscriptions内存描述 DDRII ; M DDR ; DDR ; MHz货物描述description of goods ; description goods ; Goods Description ; Quantity and description描述统计descriptive statistics ; Descriptives ; Means ; descriptive analysis描述衣服 Describing Clothes特性描述characterization ; Feature ; characteristic description ; Risk characterisation系统描述System Description ; nDynamics ; systems definition ; System Profiler描述的英语例句：1. He described the difficulties of surviving for four months as a captive.他描述了被俘4个月里挣扎求生的艰难岁月。

2. Two men answer-ing the description of the suspects tried to enter Switzerland.与描述的疑犯样子相符的两名男子试图进入瑞士。

3. Her description of the nature and action of poisons is amazingly accurate.他对一些毒药的性质和作用的描述惊人地准确。

Lenti-X iDimerize Inducible Homodimer System说明书

Product Components List Clontech Laboratories, Inc. A Takara Bio Company 1290 Terra Bella Avenue, Mountain View, CA 94043, USA U.S. Technical Support: *****************United States/Canada 800.662.2566 Asia Pacific +1.650.919.7300 Europe +33.(0)1.3904.6880 Japan+81.(0)77.543.6116 Page 1 of 1Last update: 10/18/2011 Lenti-X™ iDimerize™ Inducible Homodimer SystemCatalog No. Amount 635072 each DescriptionThe Lenti-X iDimerize Inducible Homodimer System lets you control the homodimerization of a protein of interest in live cells by adding a small molecule, the membrane-permeant compound B/B Homodimerizer, to the culture medium. The system includes the Lenti-X iDimerize Inducible Homodimer Vector Set 1, which contains three lentiviral vectors encoding dimerization tags (DmrB), as well as subcellular localization tags that can be easily fused to your protein of interest. In combination with the Lenti-X HTX Packaging System (Cat. Nos. 631247 & 631249), the optimized Lenti-X constructs allow for packaging and delivery of high-titer lentivirus to the widest range of cell types. Using this system, the activity and/or localization of the resulting chimeric protein can be controlled by the addition of B/B Homodimerizer, which is required for homodimerization and is also included.Package ContentsLenti-X iDimerize Inducible Homodimer Vector Set 1 (Cat. No. 635073; Not sold separately) >> View Components 500 μl B/B Homodimerizer (0.5 mM; Cat. No. 635060) >> View ComponentsFor storage conditions, please see the Certificate of Analysis supplied with each component.Product DocumentsDocuments for Clontech products are available for download at /manuals The following documents apply to this product:Lenti-X iDimerize Inducible Homodimer System User ManualNotice to PurchaserClontech products are to be used for research purposes only. They may not be used for any other purpose, including, but not limited to, use in drugs, in vitro diagnostic purposes, therapeutics, or in humans. Clontech products may not be transferred to third parties, resold, modified for resale, or used to manufacture commercial products or to provide a service to third parties without prior written approval of Clontech Laboratories, Inc.Your use of this p roduct is also subject to compliance with any applicable licensing requirements described on the product’s web page at . It is your responsibility to review, understand and adhere to any restrictions imposed by such statements.Clontech, the Clontech logo, iDimerize, and Lenti-X are trademarks of Clontech Laboratories, Inc. All other marks are the property of their respective owners. Certain trademarks may not be registered in all jurisdictions. Clontech is a Takara Bio Company. ©2011 Clontech Laboratories, Inc.This document has been reviewed and approved by the Clontech Quality Assurance Department.。

欧盟CE认证电气标准解读

电器安全的主要要求着重从四个方面给予考虑：1. 供电电源的安全 2. 用电器具的安全及其保护措施 3. 承担保护的元器件自身的安全 4. 接地措施为了保证电器安全的其它措施：包括对线径尺寸、线路颜色、线标；按钮、操作手柄、提示灯的颜色的要求等；1.要求机器设有外置的总电源开关，型式可采用符合IEC 60974-3（GB 14048.3 -1993）的隔离开关或符合IEC 60947-2/EN 60947-2的断路器。

（注：必须让厂家提供电源开关的CE证书，且证书上表明是符合相应的标准的）。

总电源开关的位置距地面以上0.6m～1.7m 之间。

2.要求所有开关应用“│”、“○”标注开(起动/接通)与关（停止/断开）功能。

3.电柜门应带锁。

建议总电源开关和电柜门有联锁保护。

4.关键元气件（如电源开关、断路器、交流接触器、电机、变频器、温控仪、液压元件、气压元件等等）采用认证产品，并提供认证证书复印件。

5.动力电路、控制电路、照明电路等要有过电流保护措施。

6.功率大于500W的电动机要配备过载保护。

7.电气箱包括机器内线路，中性线（N）应使用浅蓝色线，接地线用黄绿线用黄绿双色线。

其他导线不允许使用黄线、绿线和浅蓝色线。

8.内部接线（导线）不允许采用黄色和绿色线，及容易与中线混淆的浅蓝色线。

中线（N）用浅蓝色，浅蓝色是中性线的专用线色。

9. 建议绝缘导线使用以下颜色代码：——黑色：交流和直流动力电路；——红色：交流控制电路；——蓝色：直流控制电路；——橙色：由外部电源供电的连锁控制电路。

10. 每根线的线端均有线标标识。

11. 中线的的截面积至少要等于或等效于有关相线。

12. 电柜内高压端子要用防护罩防护。

13.变频器的安装应与其他电气元件隔一定距离（参照变频器使用说明书）。

14.布线应有固定措施，导线不能跨越端子。

15.导线入口锋利处用套管防护。

（进线处应尽量少开孔）。

16.接线措施：应设置单独接地排，机器各导电部件（如电机、门、罩、变压器、变频器、加热管、照明灯、PLC、开关电源等）外壳均应有黄绿双色导线连接到接地排上，一条接地线连接一个接线端子，机器内部的接地端用标注，接地排应留有一个总接地端子供连接外部接地用，并用“PE”标明。

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4 系统结构
4.1 传动系统结构
4.2 典型解决方案
4.3 实际应用案例
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4.1 传动系统结构
Vacon 变频器硬件结构：
Vacon NX 变频器在机械结构上由两个单元组成：功率单元和控制单元。

主电源侧的三相交流电抗器和直流母线电容器一起，组成LC 滤波器，再加上二极管桥就构成了IGBT 逆变桥模块所需的直流电压源。

交流电抗器的另一个功能是抑制从电源到变频器或变频器内部产生的对电源侧的高频扰动。

同时改善变频器的输入电流波形。

这样使得变频器从电源侧吸收的功率几乎都是有功功率。

IGBT 桥产生作用于电机的对称的三相交流PWM 电压。

“电机及应用宏控制”模块基于微处理器软件。

微处理器根据检测信号、参数设定值和来自控制I/O 模块及控制面板的指令对电机进行控制。

“电机及应用宏控制”模块向电机控制专用集成电路（电机控制ASIC ）发出指令，该电路计算出IGBT 的开关位置，门极驱动器对这些信号进行放大，用来驱动IGBT 逆变桥。

控制面板是连接用户与变频器的桥梁，用户可以利用控制面板设置参数值，读取状态数据和给出控制指令。

控制面板可以插拔并与变频器分离安装，通过电缆与变频器相连。

除控制面板以外，PC 机也可以通过一根类似的电缆控制变频器。

FR4－FR6 变频器中，制动电阻属于内部选件。

对于电压等级为NX_2 和NX_5的其他结构形式的变频器以及其它电压等级的变频器，制动电阻可作为选件安装在外部。

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控制逻辑
例：PID 控制应用宏中的控制逻辑
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4.2 典型解决方案:
1. 多主机模式的风机/水泵控制解决方案
Vacon 是唯一一家推出该解决方案的厂家，该方案是 Vacon 通过和用户合作来共同完成的。

该方案可以取代了传统的控制器＋接触器系统所有功能，全部内置在 Vacon 变频器中。

推荐在主泵＋辅助泵的系统中采用该解决方案。

该方案考虑了足够的冗余，提高了系统的可靠性，降低了停机的风险典型功能：PID 控制、任意时间的自动切换、睡眠功能。

2. 标准 PID 控制
在典型的水泵/风机应用中不需要额外的调节控制器（标准的Vacon 变频器可以实现常规的闭环控制功能）。

启动向导功能使调试过程变得直观、容易。

如果需要，NX 的应用软件可以包含如下特殊功能： 1 内置 PID 调节器 2 故障发生后自动重启动
3
禁用频率，可以避免特定的噪音和振动
3. 带火警模式的PID 应用宏
如果有系统安全方面的需要时，可以采用带火警模式的PID 应用宏当通过数字输入激活火警模式后： 1 自动解除变频器的所有软件和硬件故障 2 激活变频器的运行使能/运行信号 3 不允许改变变频器的输出运行方向 4
通过 PID 或固定速度给出频率基准
只有火警模式处于激活状态，变频器就一直保持运行状态，除非变频器损坏
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4.3 实际应用案例:
1.
多主机模式的风机/水泵应用宏
压力传感器的信号连接到主变频器，变频器内置的PID 控制器实现压力闭环控制。

同时通过内部系统总线传递控制信号给从机，实三台变频器以主从方式运行，定时切换。

2. 带自动切换功能的PFC 控制
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3．单机系统的压力控制
压力传感器的信号直接连接到变频器，变频器内置的 PID 控制器实现压力闭环控制。

压力闭环控制的基准信号可以通过操作面板来进行设置，可以利用 0-10V 模拟信号给定手动速度基准（通过开关实现系统的“手动/自动“切换功能）。

解决方案
选择 NXS 变频器的 “PID 应用宏”
选择 NXL 变频器的标准应用宏（“多用途控制应用宏”）
4．系统综合自动控制和手动控制功能的压力控制
压力传感器的信号接到自控系统，直接频率基准通过模拟输Ain 或现场总线提供给变频器。

可以利用 0-10V 模拟信号给定手动速度基准（用开关实现系统的“手动/自动“切换功能）
解决方案
选择 NXS 变频器的 “现场/遥控应用宏”
选择 NXL 变频器的标准应用宏（ “多用途控制应用宏”
）。