wind turbines
风力发电机用专业英语中文对照
风力机 wind turbine风电场 wind power station wind farm 风力发电机组 wind turbine generator system WTGS水平轴风力机 horizontal axis wind turbine垂直轴风力机 vertical axis wind turbine轮毂（风力机） hub (for wind turbine)机舱 nacelle支撑结构 support structure for wind turbine关机 shutdown for wind turbine正常关机 normal shutdown for wind turbine紧急关机 emergency shutdown for wind turbine空转 idling绝对湿度 absolute humidity加速试验 accelerated test加速 accelerating加速度幅值 acceleration amplitude验收试验 acceptance test精度（风力发电机组） accuracy(for WTGS)确认 acknowledgement声的基准风速 acoustic reference wind speed临界功率 activation power(for wind turbines)临界转速 activation rotational speed有功电流 active current有功功率 active power主动偏航 active yawing齿轮的变位 addendum modification on gears地址 address可调钳 adjustable pliers调整板 adjusting plate风轮空气动力特性 aerodynamic characteristics of rotor 气动弦线 aerodynamic chord of airfoil老化试验 ageing tests空气制动系 air braking system空气湿度 air humidity透气性 air permeability翼型 airfoil接闪器 air-termination system告警 alarm交流电流 alternating current交流电机 alternating current machine交流电压 alternating voltage海拔 altitude环境温度 ambient temperature放大器 amplifier幅值 amplitude模拟信号 analog signal模拟盘 analogue board模拟控制 analogue control叶片几何攻角 angle of attack of blade风轮仰角 angle of rotor shaft年平均 annual average年平均风速 annual average wind speed年发电量 annual energy production年最高日平均温度 annual extreme daily mean of temperature 年最高 annual maximum年变化 annual variation视在声功率级 apparent sound power level灭弧装置 arc-control device叶片展弦比 aspect ratio异步电机 asynchronous generator异步电机 asynchronous machine衰减 attenuation自耦变压器 auto-transformer辅助电路 auxiliary circuit辅助装置 auxiliary device有效性 availability可利用率（风力发电机组） availability(for WTGS)平均噪声 average noise level轴向齿距 axial pitch球头挂环 ball-eye球头挂钩 ball-hook基准误差 basic error波特 baud(Bd)位；比特 bit黑体 black body叶片 blade叶片损失 blade losses锁定（风力机） blocking(for wind turbines)等电位连接带 bonding bar等电位连接导体 bonding conductor刹车盘 brake disc刹车油 brake fluid闸衬片 brake lining制动机构 brake mechanism闸垫 brake pad制动器闭合 brake setting制动器（风力机） brake(for wind turbines)制动器释放 braking releasing制动系统 braking system交流电动机的最初起动电流 breakaway starting current of an a.c. 击穿 breakdown母线 busbar母线伸缩节 bus-bar expansion joint母线间隔垫 bus-bar separator硬母线固定金具 bus-bar support字节 byte电缆剪 cable cutter笼型 cage电容 capacitance电容器 capacitor保护电容器 capacitor for voltage protection牙嵌式联接 castellated coupling严重故障（风力机） catastrophic failure(for wind turbines) 中心距 center distance中心轮 center gear集中控制 centralized control换接 change-over switching特性 characteristic特性曲线 characteristic curves化学腐蚀 chemical corrosion断路器 circuit breaker圆周侧隙 circumferential backlash排除故障 clearance挂板 clevis 7 tongue气候 climate闭合电路 closed circuit代码 code扭转刚度系数 coefficient of torsional rigidity线圈 coil集电环 collector ring命令 command投运试验 commissioning test共用接地系统 common earthing system换向 commutation换向器 commutator换向片 commutator segment复杂地形带 complex terrain导电性 conductivity导体 conductor卡线钳 conductor clamp夹线器 conductor holder联结 connection等截面叶片 constant chord blade触头 contact接触器 contactor大陆性气候 continental climate持续运行 continuous operation控制电器 control apparatus控制柜 control cabinet控制电路 control circuit控制台 control desk控制装置 control device控制系统（风力机） control system(for wind turbines)控制设备 controlgear控制器 controller变流器 converter腐蚀 corrosion金属腐蚀 corrosion of metals耐腐试验 corrosion resistance tests度电成本 cost per kilowatt hour of the electricity generated by WTGS计量值 counted measured,metered measured,metered reading重锤 counter weight联轴器 coupling临界阻尼 critical damping弯度函数 curvature function of airfoil切入风速 cut-in wind speed切出风速 cut-out wind speed圆柱齿轮 cylindrical gear日平均值 daily mean防振锤 damper阻尼 damping阻尼系数 damping coefficient阻尼比 damping ratio数据库 data base数据电路 data circuit数据终端设备 data terminal equipment(DTE)数据组（测试功率特性） date set(for power performance measureme nt)译码 decode弯度 degree of curvature三角形联结 delta connection设计极限 design limits设计工况 design situation露 dew直径和半径 diameter and radius介质试验 dielectric test数字控制 digital control直流电流 direct current直流电机 direct current machine直接太阳辐射 direct solar radiation直流电压 direct voltage指向性（风力发电机组） directivity(for WTGS)位移幅值 displacement amplitude指示灯 display lamp距离常数 distance constant畸变 distortion配电电器 distributing apparatus日变化 diurnal variation双卡头 double clamp人字齿轮 double-helical gear下风向 down wind引下线 down-conductor阻力系数 drag coefficient泄油 drain从动齿轮 driven gear主动齿轮 driving;gear干式变压器 dry-type transformer双工传输 duplex transmission耐久性 durability防尘 dust-protected负载比 duty ratio齿啮式联接 dynamic coupling接地线 earth conductor接地体 earth electrode地 earth;ground接地电路 earthed circuit接地基准点 earthing reference points(ERP) 接地开关 earthing switch接地装置 earth-termination system效率 efficiency机组效率 efficiency of WTGS弹性联接 elastic coupling电的 electric电荷 electric charge电路 electric circuit耦合器 electric coupling电流 electric current电能转换器 electric energy transducer电机 electric machine触电；电击 electric shock电线电缆 electric wire and cable电触头 electrical contact电气元件 electrical device放电 electrical discharge电气寿命 electrical endurance旋转电机 electrical rotating machine电 electricity电极 electrode电磁制动系 electromagnetic braking system电磁感应 electromagnetic induction静电学 electrostatics紧急制动系 emergency braking system紧急关机（风力机） emergency shutdown(for wind turbines) 紧急停车按钮 emergency stop push-button编码 encode耐久性试验 endurance test啮合 engagement;mesh环境 environment环境条件 environment condition设备故障信息 equipment failure information等电位连接 equipotential bonding事件信息 event information励磁响应 excitation response励磁 excitation response励磁机 exciter外部条件（风力机） external conditions(for wind turbines) 外部条件 external conditions(for WTGS)外齿轮 external gear外部防雷系统 external lightning protection system外部动力源 external power supply外推功率曲线 extrapolated power curve极端 extreme极端最高 extreme maximum极端风速 extreme wind speed齿宽 face width安全性 fail safe失效 - 安全 fail-safe失效 failure故障 fault故障接地 fault earthing顺桨 feathering现场数据 field data现场可靠性试验 field reliability test外联机试验 field test with turbine滤波器 filter闪烙 flashover柔性齿轮 flexible gear柔性滚动轴承 flexible rolling bearing万向套筒扳手 flexible spanner hand弯曲刚度 flexural rigidity闪变 flicker持续运行的闪变系数 flicker coefficient for continuous operation闪变阶跃系数 flicker step factor气流畸变 flow distortion颤振 flutter雾 fog基础接地体 foundation earth electrode独立式塔架 free stand tower自由流风速 free stream wind speed冻雨 freezing rain频率 frequency变频器 frequency converter风速频率 frequency of wind speed前置机 front end processor满载 full load熔断器 fuse齿轮 gear齿轮马达 gear motor齿轮副 gear pair平行轴齿轮副 gear pair with parallel axes齿轮泵 gear pump变位齿轮 gears with addendum modification发电机 generator几何弦长 geometric chord of airfoil雨淞 glaze均压环 grading ring 掠射角 grazing angle。
电力专业英语13-Wind Turbines
Types of wind turbines--Vertical axis
• Vertical-axis wind turbines (or VAWTs) have the main rotor shaft arranged vertically. Key advantages of this arrangement are that the turbine does not need to be pointed into the wind to be effective. This is an advantage on sites where the wind direction is highly variable. • With a vertical axis, the generator and gearbox can be placed near the ground, so the tower doesn't need to support it, and it is more accessible for maintenance. Drawbacks are that some designs produce pulsating torque.
Types of wind turbines--Horizontal axis
• Wind turbines can rotate about either a horizontal or vertical axis, the former being more common.
Components of a horizontal axis wind turbine (gearbox, rotor shaft and brake assembly) being lifted into position
英文介绍风车的作文
英文介绍风车的作文英文：Windmills, also known as wind turbines, are machines that harness the power of wind to generate electricity. They consist of a tower, blades, and a nacelle, which houses the generator and other equipment. When the wind blows, it causes the blades to spin, which in turn spins the generator and produces electricity.Windmills are a renewable energy source, meaning they use a resource that will never run out. They are also environmentally friendly, as they produce no emissions or pollutants. In addition, wind energy is often cheaper than other forms of energy, such as fossil fuels.One of the advantages of windmills is that they can be used in a variety of settings. They can be placed on land or offshore, and can be used in both rural and urban areas. They are also modular, meaning they can be added to orremoved from a system as needed.However, windmills do have some disadvantages. They are highly dependent on wind, and may not produce electricityif the wind is too weak or too strong. They can also be noisy and may have an impact on wildlife.Overall, windmills are a promising source of renewable energy. With continued development and improvement, they have the potential to become a major contributor to our energy needs.中文：风车，也称风力发电机，是一种利用风力发电的机器。
wind造句
wind的英语例句1. The wind was bouncing the branches of the big oak trees.一棵棵高大橡树的枝条随风摇摆。
2. Wind turbines are large and noisy and they disfigure the landscape.风力涡轮机个头大、噪音响，还会破坏周边风景。
3. His long, uncovered hair flew back in the wind.他那露在外面的长发随风向后飞舞。
4. The President is about to wind up his visit to Somalia.总统即将结束对索马里的访问。
5. She unbound her hair and let it flow loose in the wind.她把头发解开，让它随风飘动。
6. If a stranger stops you, just wind the window down a fraction.如果有陌生人拦你的车，把车窗摇下一点点就行。
7. It should also look into the possibilities of wind-generated electricity.还会对风力发电的可能性进行研究。
8. Finding a second wind, he rode away from his pursuers.他缓过劲儿来，骑马逃离了追赶他的人。
9. Wind caught the sudden puff of dust and blew it inland.风猛地刮起一阵灰尘，将它吹往内陆。
10. A gust of wind pried loose a section of sheet-metal roofing.一阵狂风把铺在屋顶上的一块金属片掀起来了。
wind的名词是风，动词是缠绕的意思，你们能够充分利用这个英语单词造句吗？下面我为大家带来wind的英语意思和相关用法，欢迎大家一起学习!wind的英语音标英[wɪnd]美[wɪnd]wind的时态过去分词: wound过去式: wound现在分词: windingwind的意思n. 风;呼吸;气味;卷绕vt. 缠绕;上发条; vi. 缠绕;上发条; wind的近义词curve。
wind是什么意思(最新3篇)
wind是什么意思（最新3篇）wind的英语例句篇一1.Thewindwasbouncingthebranchesofthebigoaktrees.一棵棵高大橡树的枝条随风摇摆。
2.Windturbinesarelargeandnoisyandtheydisfigurethelandscape.风力涡轮机个头大、噪音响，还会破坏周边风景。
3.Hislong,uncoveredhairflewbackinthewind.他那露在外面的长发随风向后飞舞。
4.ThePresidentisabouttowinduphisvisittoSomalia.总统即将结束对索马里的访问。
5.Sheunboundherhairandletitflowlooseinthewind.她把头发解开，让它随风飘动。
6.Ifastrangerstopsyou,justwindthewindowdownafraction.如果有陌生人拦你的车，把车窗摇下一点点就行。
7.Itshouldalsolookintothepossibilitiesofwind-generatedelectricity.还会对风力发电的可能性进行研究。
8.Findingasecondwind,herodeawayfromhispursuers.他缓过劲儿来，骑马逃离了追赶他的人。
9.Windcaughtthesuddenpuffofdustandblewitinland.风猛地刮起一阵灰尘，将它吹往内陆。
10.Agustofwindpriedlooseasectionofsheet-metalroofing.一阵狂风把铺在屋顶上的一块金属片掀起来了。
11.Alltheyheardwasthewindwhisperingthroughthetreetops.他们听到的只有风吹过树梢的飒飒声。
12.Anautomaticweatherstationfeedsinformationonwinddirectiontothecomputer.自动化气象站将风向信息输入计算机。
wind的同义词辨析
wind的同义词辨析wind有风; 气流等意思，那么你知道wind的同义词有哪些吗?下面店铺为大家带来wind的同义词及辨析，欢迎大家学习!wind同义词：wind, breezewind同义词辨析：这两个名词均有"风"之意。
wind 普通用词，指空气的流动现象。
breeze 系微风的总称。
wind的例句：1. The wind was bouncing the branches of the big oak trees.一棵棵高大橡树的枝条随风摇摆。
2. Wind turbines are large and noisy and they disfigure the landscape.风力涡轮机个头大、噪音响，还会破坏周边风景。
3. His long, uncovered hair flew back in the wind.他那露在外面的长发随风向后飞舞。
4. The President is about to wind up his visit to Somalia.总统即将结束对索马里的访问。
5. She unbound her hair and let it flow loose in the wind.她把头发解开，让它随风飘动。
6. If a stranger stops you, just wind the window down a fraction.如果有陌生人拦你的车，把车窗摇下一点点就行。
7. It should also look into the possibilities of wind-generated electricity.还会对风力发电的可能性进行研究。
8. Finding a second wind, he rode away from his pursuers.他缓过劲儿来，骑马逃离了追赶他的人。
9. Wind caught the sudden puff of dust and blew it inland.风猛地刮起一阵灰尘，将它吹往内陆。
DOUBLY FED INDUCTION GENERATOR SYSTEMS for Wind Turbines翻译
DOUBL Y FED INDUCTION GENERATOR SYSTEMS for Wind Turbines风力涡轮机的双馈感应发电系统A viable alternative to ADJUST SPEED over a wide range at MINIMAL COST一种极低成本的在较宽范围内调速的有效替代品THE AIM OF WIND TURBINE SYSTEMS DEVELOPMENT is to continuously increase output power.风力涡轮机系统开发的目的是为了持续增加输出的功率。
A few years ago, the rated output power of production-type units reached 200 kW.几年之前，产品型号机组的额定输出功率达到了200kW。
By 1999, the average output power of new installations climbed to 600 kW.到1999年，新设备的平均输出功率上升到600kW。
0The largest series production units today are specified to deliver 1.5-MW output power(Table1). 现在，最大系列产品机组被指定提供1.5MW的输出功率（如表1）。
It is anticipated that in the near future, power rating of wind turbines will increase further, especially in offshore applications.可以预测，在不久的将来，风力涡轮机，特别是在海上应用，的额定功率会进一步增加For example, the prototype of a Nordex N80 with a rated power of 2.5 MW was installed in March 2000 near Aachen.比如，在2000年3月，额定功率为2.5MW的Nordex N80型号的风力涡轮机安装在了靠近亚琛城市的地方Many low-power wind turbines built to-date were constructed according to the “ Danish concept ”(Fig.1), in which wind energy is transformed into electrical energy using a simple squirrel-cage induction machine directly connected to a three-phase power grid.许多最新安装的小功率风力涡轮机是根据丹麦理念建造的（如图1），丹麦理念是让风能利用一个简单的鼠笼式感应电机直接连接到三相电网转化成电能。
风电专业术语中英文对照
风电专业术语中英文对照————————————————————————————————作者：————————————————————————————————日期：1、风力机wind turbine2、风力发电机组wind turbine generator system (WTGS)3、风电场wind power station; wind farm4、水平轴风力机horizontal axis wind turbine5、垂直轴风力机vertical axis wind turbine6、轮毂（风力机）Hub(for wind turbines)7、机舱nacelle8、支撑结构（风力机）support structure (for wind turbine)9、关机（风力机）shutdown (for wind turbine)10、紧急关机（风力机）emergency shutdown(for wind turbine)11、空转（风力机）idling(for wind turbine)12、锁机（风力机）blocking (for wind turbine)13、停机（风力机）parking14、静止standstill15、制动器（风力机）brake(for wind turbine)16、停机制动（风力机）parking brake (for wind turbine)17、风轮转速（风力机）rotor speed (for wind turbine)18、控制系统（风力机）control system (for wind turbine)19、保护系统（风力发电系统）protection system (for WTGS)设计和安全参数20、设计工况design situation21、载荷情况load case22、外部条件（风力机）external conditions (for wind turbine)23、设计极限design limits24、极限状态limit state25、安全寿命safe life风特性26、风速wind speed27、风矢量wind velocity28、额定风速（风力机）rated wind speed(for wind turbine)29、切入风速cut-in wind speed30、切出风速cut-out wind speed31、年平均annual average32、年平均风速annual average wind speed33、平均风速mean wind speed34、极端风速extreme wind speed35、风切变wind shear 36、下风向down wind37、上风向up wind38、阵风gust39、粗糙长度roughness length40、湍流强度turbulence intensity41、风场wind site42、测量参数measurement parameters43、测量位置measurement seat44、最大风速maximum wind speed45、风功率密度wind energy density46、阵风影响gust influence47、环境environment48、气候climate49、海洋气候ocean climate50、室内气候indoor climate51、极端最高extreme52、极端最高extreme maximum53、年最高annual maximum54、月平均温度mean monthly temperature55、空气湿度air humidity56、绝对湿度absolute humidity57、相对湿度relative humidity58、雨rain59、冻雨freezing rain60、雾凇;霜rime61、雾fog62、盐雾salt fog63、标准大气压standard air pressure64、平均海平面mean sea level65、太阳辐射solar radiation66、直接太阳辐射direct solar radiation67、天空辐射sky radiation68、太阳常数solar constant69、黑体black body70、白体white body71、温室效应greenhouse effect72、表面温度surface temperature与电网连接73、输出功率（风力发电机组）output power74、额定功率（风力发电机组）rated power 功率特性测试75、功率特性power performance76、功率系数power coefficient77、扫掠面积swept area78、测量功率曲线measured power79、可利用率（风力发电机组）availability(for WTGS)80、数据组（测试功率特性）data set(for power performance measurement)81、精度（风力发电机组）accuracy(for WTGS)82、测量误差uncertainty in measurement83、测量周期measurement period84、实验场地test site85、气流畸变flow distortion86、障碍物obstacles87、风障wind break88、声压级sound pressure level89、声级weighted sound pressure level; sound level90、值向性（风力发电机组）directivity(for WTGS)91、音值tonality92、风的基准风速acoustic reference wind speed93、标准风速standardized wind speed94、基准高度reference height95、基准粗糙长度reference roughness length96、基准距离reference distance97、掠射角grazing angle98、比恩法method of bins99、标准误差standard uncertainly100、风能利用系数rotor power coefficient 101、力矩系数torque coefficient102、额定力矩系数rated torque coefficient 103、起动力矩系数starting torque coefficient 104、最大力矩系数maximum torque coefficient 105、过载度ratio of over load106、风力发电机组输出特性output characteristic of WTGS107、调节特性regulating characteristics108、平均噪音average noise level109、机组效率efficiency of WTGS110、机组寿命service life111、度电成本cost per kilowatt hour of the electricity generated by WTGS风轮112、风轮wind rotor113、风轮直径rotor diameter114、风轮扫掠面积rotor swept area115、风轮仰角tilt angle of rotor shaft116、风轮偏航角yawing angle of rotor shaft 117、风轮额定转速rated turning speed of rotor 118、风轮最高转速maximum turning speed of rotor119、风轮尾流rotor wake120、尾流损失wake losses121、风轮稳定rotor stability122、实度损失the degree of actual loss123、叶片数number of blades124、叶片blade125、等截面叶片constant chord blade126、变截面叶片面积variable chord blade 127、叶片投影面积projected area of blade 128、叶片长度length of blade129、叶根root of blade130、叶尖tip of blade131、叶尖速度tip speed132、桨距角pitch angle133、翼型airfoil134、前缘leading edge135、后缘tailing edge136、几何弦长geometric chord of airfoil137、平均几何弦长mean geometric chord of airfoil138、气动弦线aerodynamic chord of airfoil 139、翼型厚度thickness of airfoil140、翼型相对厚度relative thickness of airfoil 141、厚度函数thickness function of airfoil 142、翼型族the family of airfoil143、叶片根梢比ratio of tip-section chord to root-section chord144、叶片展弦比aspect ratio145、叶片安装角setting angle of blade146、叶片扭角twist of blade147、叶片几何攻角angle of attack of blade 148、叶尖损失tip losses149、叶片损失blade losses150、颤振flutter151、迎风机构orientation mechanism152、调速机构regulating mechanism153、风轮偏侧式调速机构regulating mechanism of turning wind rotor out of the wind sideward 154、变桨距调节机构regulating mechanism by adjusting the pitch of blade155、导流罩nose156、顺桨feathering157、阻尼板spoiling flap158、风轮空气动力特性aerodynamiccharacteristics159、叶尖速比tip-speed ratio160、额定叶尖速比rated tip-speed ratio161、升力系数lift coefficient162、阻力系数drag coefficient163、推或拉力系数thrust coefficient传动系统164、传动比transmission ratio165、齿轮gear166、齿轮副gear pair167、平行轴齿轮副gear pair with parallel axes 168、齿轮系train of gears169、行星齿轮系planetary gear train170、小齿轮pinion171、大齿轮wheel gear172、主动齿轮driving gear173、从动齿轮driven gear174、行星齿轮planet gear175、行星架planet carrier176、太阳轮sun gear177、内齿圈ring gear178、外齿轮external gear179、内齿轮internal gear180、内齿轮副internal gear pair181、增速齿轮副speed increasing gear pair 182、增速齿轮系speed increasing gear train 183、中心距离center distance184、增速比speed increasing ratio185、齿面tooth flank186、工作齿面working flank187、非工作齿面non-working flank188、模数module189、齿数number of teeth190、啮合engagement ; mesh191、齿轮的变位addendum modification on gear192、变位齿轮gear with addendum modification 193、圆柱齿轮cylindrical gear194、直齿圆柱齿轮spur gear195、斜齿圆柱齿轮helical gear; single-helical gear196、节点pitch point197、节圆pitch circle198、齿顶圆tip circle199、齿根圆root circle200、直径和半径diameter and radius 201、齿宽face width202、齿厚tooth thickness203、压力角pressure angle204、蜗杆worm205、蜗轮worm wheel206、联轴器coupling207、刚性联轴器rigid coupling208、万向联轴器universal coupling209、安全联轴器security coupling210、齿tooth211、齿槽tooth space212、斜齿轮helical gear213、人字齿轮double-helical gear214、齿距pitch215、法向齿距normal pitch216、齿高tooth depth217、输入轴input shaft218、输出轴output shaft219、柱销pin220、柱销套roller221、行星齿轮传动机构planetary gear drive mechanism222、中心轮center gear223、单级行星齿轮系single planetary gear train 224、多级行星齿轮系multiple-stage planetary gear train225、柔性齿轮flexible226、刚性齿轮rigidity gear227、柔性滚动轴承flexible rolling bearing 228、输出联接output coupling229、刚度rigidity230、扭转刚度torsional rigidity231、扭转刚度系数coefficient of torsional rigidity 232、起动力矩starting torque233、传动误差transmission error234、传动精度transmission accuracy235、固有频率natural frequency236、弹性联接elastic coupling237、刚性联接rigid coupling238、滑块联接Oldham coupling239、固定联接integrated coupling240、齿啮式连接dynamic coupling241、花键联接splined coupling242、牙嵌式联接castellated coupling243、径向销联接radial pin coupling244、周期振动periodic vibration245、随机振动random vibration246、峰值peak value247、临界阻尼critical damping248、阻尼系数damping coefficient249、阻尼比damping ratio250、减震器vibration isolator251、幅值amplitude252、位移幅值displacement amplitude 253、速度幅值velocity amplitude254、加速度幅值acceleration amplitude发电机255、同步发电机synchronous generator 256、异步发电机asynchronous generator 257、感应电机induction generator258、转差率slip259、瞬态电流transient current260、笼型cage261、绕线转子wound rotor262、绕组系数winding factor263、换向器commutator264、集电环collector ring265、换向片commutator segment266、励磁响应excitation response制动系统267、制动系统braking system268、制动机构brake mechanism269、正常制动系normal braking system 270、紧急制动系emergency braking system 271、空气制动系air braking system272、液压制动系hydraulic braking system 273、电磁制动系electromagnetic braking system274、机械制动系mechanical braking system 275、辅助装置auxiliary device276、制动器释放braking releasing277、制动器闭合brake setting278、液压缸hydraulic cylinder279、溢流阀relief valve280、泄油drain281、齿轮马达gear motor282、齿轮泵gear pump283、电磁阀solenoid valve284、液压过滤器hydraulic filter285、液压泵hydraulic pump286、液压系统hydraulic system 287、油冷却器oil cooler288、压力控制阀pressure control valve 289、安全阀safety valve290、设定压力setting pressure291、切换switching292、旋转接头rotating union293、压力表pressure gauge294、液压油hydraulic fluid295、液压马达hydraulic motor296、油封oil seal297、刹车盘brake disc298、闸垫brake pad299、刹车油brake fluid300、闸衬片brake lining偏航系统301、滑动制动器sliding shoes302、偏航yawing303、主动偏航active yawing304、被动偏航passive yawing305、偏航驱动yawing driven306、解缆untwist塔架307、塔架tower308、独立式塔架free stand tower309、拉索式塔架guyed tower310、塔影效应influence by the tower shadow 控制与监测系统311、远程监视telemonitoring312、协议protocol313、实时real time314、单向传输simplex transmission315、半双工传输half-duplex transmission 316、双工传输duplex transmission317、前置机front end processor318、运动终端remote terminal unit (RUT) 319、调制解调器modern320、数据终端设备date terminal equipment 321、接口interface322、数据电路date circuit323、信息information324、状态信息state information325、分接头位置信息tap position information 326、监视信息monitored information327、事件信息event information328、设备故障信息equipment failure information329、返回信息return information330、告警alarm331、设定值set point valve332、瞬时测量instantaneous measured333、计量值counted measured ; metered measured ; metered reading334、确认acknowledgement335、信号signal336、模拟信息analog signal337、命令command338、字节byte339、位:比特bit340、地址address341、波特BD342、编码encode343、译码decode344、代码code345、集中控制centralized control346、可编程序控制programmable control 347、微机程制minicomputer program control 348、模拟控制analogue control349、数字控制digital control350、强电控制strong current control351、弱电控制weak current control352、单元控制unit control353、就地控制local control354、联锁装置interlocker355、模拟盘analogue board356、配电盘switch board357、控制台control desk358、紧急停车按钮emergency stop push-button 359、限位开关limit switch360、有载指示灯on-load indicator361、位置指示灯position indicator362、屏幕显示screen display363、指示灯display lamp364、起动信号starting signal365、公共供电点point of common coupling 366、闪变flicker367、数据库data base368、硬件hardware369、硬件平台hardware platform370、层layer ; level ; class371、模型model372、响应时间response time373、软件software 374、软件平台software platform375、系统软件system software376、自由脱扣trip-free377、基准误差basic err378、一对一控制方式one-to-one control mode 379、一次电流primary current380、一次电压primary voltage381、二次电流secondary current382、二次电压secondary voltage383、低压电器low voltage384、额定工作电压rated operational voltage 385、运行管理operation management386、安全方案safety387、外部条件external condition(for WTGS) 388、失效failure389、故障fault390、控制柜control cabinet391、冗余技术redundance392、正常关机normal shutdown (for wind turbine)393、失效-安全fail-safe394、排除故障clearance395、空转idling (for wind turbine)396、外部动力external power supply397、锁定装置locking set398、临界转速activation rotational speed 399、最大转速maximum rotational speed 400、过载功率over power (for wind turbine) 401、临界功率activation power (for wind turbine) 402、最大功率maximum power (for wind turbine) 403、外联机试验field test with turbine404、试验台test-bed405、台架试验test on bed406、防雷系统lighting protection system(LPS) 407、外部防雷系统external lighting protection system408、内部防雷系统internal lighting protection system409、接闪器air-termination system410、等电位连接equipotential bonding411、引下线down-conductor412、接地装置earth-termination system413、接地线earth conductor414、接地体earth electrode415、环行接地体ring earth electrode416、基础接地体foundation earth electrode417、等电位连接带bonding bar418、等电位连接导体bonding conductor 419、保护等级protection lever420、防雷区lightning protection zone421、雷电流lightning current422、电涌保护区surge suppressor423、共用接地系统common earthing system 424、接地基准点earthing reference point (ERP) 425、持续运行continuous operation426、持续运行的闪变系数flicker coefficient for continuous operation427、闪变阶跃系数flicker step factor428、最大允许功率maximum permitted power 429、最大测量功率maximum measured power 430、电网阻抗相角network impedance phase angle431、正常运行normal operation432、功率采集系统power collection syetem 433、额定电流rated current434、额定无功功率rated reactive power435、停机standstill436、起动start up437、切换运行switching operation438、风力机最大功率maximum power of wind turbine439、风力机停机parked wind turbine440、安全系数safety system441、控制装置control device442、额定负载rated load443、周期period444、相位phase445、频率frequency446、阻尼damping447、电electricity448、电的electric449、电流electric current450、导电性conductivity451、电压voltage452、电磁感应electromagnetic induction 453、励磁excitation454、电阻率resistivity455、导体conductor456、半导体semiconductor457、电路electric circuit458、串联电路series circuit459、电容capacitance 460、电感inductance461、电阻resistance462、阻抗impedance463、电抗reactance464、传递比transfer ration465、交流电压alternating voltage466、交流电流alternating current467、脉动电压pulsating voltage468、脉动电流pulsating current469、直流电压direct voltage470、直流电流direct current471、瞬时功率instantaneous power472、有功功率active power473、无功功率reactive power474、有功电流active current475、无功电流reactive current476、功率因数power factor477、中性点neutral point478、相序sequential order of the phase 479、电气元件electrical device480、接线端子terminal481、电极electrode482、地earth ; ground483、接地电路resistance of an earthed conductor484、绝缘子insulator485、绝缘套管insulating bushing486、母线busbar487、线圈coil488、螺线管solenoid489、绕组winding490、电阻器resistor491、电感器inductor492、电容器capacitor493、继电器relay494、电能转换器electric energy transducer 495、电机electric machine496、发电机generator497、电动机motor498、变压器transformer499、变流器converter500、变频器frequency converter501、整流器rectifier502、逆变器inverter503、传感器sensor504、偶合器electric coupling505、放大器amplifier506、振荡器oscillator507、滤波器filter508、触头contact509、开关设备switchgear510、控制设备controlgear511、闭合电路closed circuit512、断开电路open circuit513、通断switching514、联结connection515、串联series connection516、并联parallel connection517、星型联结star connection 518、三角形联结star connection 519、主电路main circuit520、辅助电路auxiliary circuit521、控制电路control circuit522、信号电路signal circuit523、保护电路protective circuit 524、换向commutation525、输入功率input power526、输入input527、输出output528、负载load529、加载to load530、充电to charge531、放电to discharge532、有载运行on-load operation 533、空载运行no-load operation 534、开路运行open-circuit operation 535、短路运行short-circuit operation 536、满载full load537、效率efficiency538、损耗loss539、过电压over-voltage540、过电流over circuit541、欠电压under-voltage542、特性characteristic543、绝缘物insulant544、隔绝to isolate545、绝缘电阻insulation resistance 546、泄漏电流leakage current 547、短路short circuit548、噪音noise549、额定值rated value550、环境条件environment condition 551、工况operating condition552、额定工况rated condition553、极限数limiting value554、绝缘比insulation level555、负载比duty ratio556、抽样试验sampling test557、维护试验maintenance test558、投运试验commissioning test559、加速accelerating560、特性曲线characteristic curve561、额定电压rated voltage562、额定频率rated frequency563、额定转速rated speed564、温升temperature rise565、温度系数temperature coefficient 566、端电压terminal voltage567、短路电流short circuit current568、可靠性reliability569、有效性availability570、耐久性durability571、维修maintenance572、修复时间repair time573、寿命life574、寿命试验life time575、使用寿命useful life576、平均寿命mean life577、耐久试验endurance test578、可靠性测定试验reliability determination 579、现场可靠性试验field reliability test 580、加速试验accelerated test581、安全性fail safe582、应力stress583、强度strength584、试验数据test data585、现场数据field data586、电触头electrical contact587、主触头main contact588、击穿breakdown589、电线电缆electrical wire and cable 590、电力电缆power cable591、通讯电缆telecommunication cable ; communication cable592、油浸式变压器oil-immersed type transformer593、干式变压器dry-type transformer594、自耦变压器auto-transformer595、空载电流non-load current596、阻抗电压impedance voltage597、电抗电压reactance voltage598、电阻电压resistance voltage599、配电电器distributing apparatus 600、控制电器control apparatus601、开关switch602、熔断器fuse603、断路器circuit breaker604、控制器controller605、接触器contactor606、机械寿命mechanical endurance 607、电气寿命electrical endurance 608、旋转电机electrical rotating machine 609、直流电机direct current machine 610、交流电机alternating current machine 611、同步电机synchronous machine 612、异步电机asynchronous machine 613、感应电机induction machine614、开路特性open-circuit characteristic 615、负载特性load characteristic616、短路特性short-circuit characteristic 617、额定转矩rated load torque618、同步转速synchronous speed619、转差率slip620、短路比short-circuit ratio621、同步系数synchronous speed622、空载no-load623、系统system624、正常状态normal condition625、接触电压touch voltage626、跨步电压step voltage627、对地电压voltage to earth628、安全阻抗safer impedance629、安全距离safe distance630、安全标志safe marking631、安全色safety color632、中性点有效接地系统system with effectively earthed neutral633、检修接地inspection earthing634、工作接地working earthing635、保护接地protective earthing636、过电压保护over voltage protection 637、过电流保护over current protection 638、断相保护open-phase protection附加词汇639、电力电子器件power electronic device 640、晶闸管thyratron641、电力二级管power diode642、半导体整流器semiconductor rectifier –SR 643、绝缘栅双级晶体管insulated-gate bipolar transistor------IGBT644、普通二级管（整流二级管）general purpose diode。
Wind Turbine Brake系统与Piston Accumulator Retrofit安全
Piston Accumulator RetrofitImprove Wind Turbine Safety with a Piston Accumulator RetrofitTom UleryBusiness Development Managerof Renewable Energy with ParkerHannifin.1. Among the key components of a typical wind turbine with pitch-con-trolled blades is the high-speed shaft (HSS) brake.The mechanical turbine brake is placed on the high-speed side of the gearbox before the generator. All wind turbines use aerodynamic braking for two principal purposes. The first purpose relates to regular turbine operation. Aerodynamic braking controls the power produced by the generator by properly aligning the nacelle into the wind with yaw control and optimizing the blade longitudinal rotation, typically by full-span blade pitch control. The pitch control system, usually located within the turbine hub, rotates the three variable-pitch turbine blades in unison to precisely control the generator speed based on a feedback signal from the generator.The second purpose of aerodynamic braking pertains to system safety. Should freewheeling in high windsoccur, the aerodynamic brakingsystem will turn each rotor blade 90 degrees on its longitudinal axis to minimize lift and maximize drag, effectively “stalling” the blades. The net result is to stop the rotation of the rotor, often within a few rotations. A mechanical brake is engaged when blade rotation stops to secure the rotor when the wind turbine is out of service, typically for maintenance.Effective Blade BrakingThe turbine safety system design is based on the requirement for redundancy. The sensor-based overspeed protection system, for example, is backstopped with a purely mechanical centrifugal brake release system. This concept is not unlike a typical enginegenerator set where a mechanical centrifugal governor backs up the electronic overspeed controls. On a wind turbine, the safety system backup to aerodynamic braking is a physical disc brake placed on the high-speed gearbox shaft (Figure 1). This approach to stopping the rotor minimizes stress to the blade rotor, tower, or other machinery.2. A diaphragm actuator is shown here of the manual brake actuator handle. The diaphragm accumula-tor stores a supplemental source of hydraulic fluid under pressure, which is used to actuate the caliper disk brake (shown in red) in the event of an overspeed of the rotor during a power outage. The silver “can” beneath the accu-mulator is part of the high-speed shaft hydraulic system. The gear-box is in the foreground, and the generator is in the background.If the wind turbine rotor turns at 15 rpm, the gearbox will increase the output shaft to 1,500 rpm for the generator. The mechanical brake is actuated by a diaphragm-style accumulator that stores hydraulic fluid under pressure that can actuate a disk brake in the event of an overspeed eventduring a loss of power (Figure 2).Potential Failure ModesThe design of a typical diaphragm accumulator is quite simple. The inlet side ofthe accumulator is exposed to the pressurized hydraulic oil system. A compressible inert gas, such as nitrogen, fills the top of the accumulator. Separating the two volumes is a flexible rubber diaphragm membrane that compresses the nitrogen to hydraulic system pressure. Should the hydraulic system lose pressure,such as during a power outage or electronics failure, the nitrogenwill expand and release the stored hydraulic fluid, which is sufficientnitrogen pre-charge maintenance over time. The rubber diaphragm separates the pressurized gas side of the accumulator fromthe fluid side with a relatively large cross-sectional diaphragm. This design allows the entire diaphragm to be in contact with the pressurized gas, allowing for a larger area for the gas to permeate through. A typical 1-gallon piston accumulator has 97% less exposed seal surface area thanan equivalent 1-gallon rubber diaphragm accumulator.port options and that the orifice limits the design flow rate. The standard piston accumulator allows for multiple sizes and allows for flow rates of eightto 10 times that of diaphragm accumulators. Table 1 illustrates additional technical specifications of the piston and diaphragm design options. Figure 5 presents the installation of a piston accumulator in place of the diaphragm accumulator shown inFigure 2.5. A piston accumulator replacedthe failed diaphragm accumulatorinstalled on the disk brake assemblyshown in Figure 2.The cause of permeation is directlyrelated to the rubber compound,the type of gas, the temperature ofthe gas, the pressure differential,its cyclic duty, and the volumeof rubber used to form thediaphragm. The rubber diaphragmaccumulators are typically limitedto two standard diaphragmcompounds, nitrile and hydrin.The piston accumulator has sixpossible seal compounds withavailable seal temperature rangefor –40F to 325F, so there is a sealfor every type of hydraulic fluidand temperature requirement.There are other applicationlimitations for the rubberdiaphragm accumulators. Forexample, this style of accumulatoris limited to operation in systemswith a maximum compressionratio (the ratio of the maximumworking pressure to pre-chargepressure) in the range of 4:1 to8:1. In contrast, the compressionratio of a piston accumulator isunlimited. The technician merelyadjusts the pre-charge so that thepiston is allowed to ride at mid-stroke, not bottoming out on eitherend of the accumulator. Otherapplication limitations of therubber diaphragm accumulatorsinclude the limited number ofPractical OperationsWind turbine maintenanceevolutions are scheduled inadvance, and forced outagesdisrupt that schedule. A rupture ina rubber diaphragm accumulatorwill signal an immediate turbineforced outage, and it will remainidle until a maintenance team ismobilized to replace the failedaccumulator. Depending onmaintenance team availability, itwould not be out of the ordinaryfor the turbine to be out of servicefor five or more days before repairsare completed. Assuming thiswas a 1.5-MW turbine and that itwas operating at the 2019 averagecapacity factor reportedOctober 2020© 2015 Parker Hannifin Corporation Parker Hannifin Corporation Energy Market 6035 Parkland Blvd Cleveland, OH 44102phone 800 272 7537*******************by the Energy Information Administration of 34.9%, then the turbine lost approximately 63 MWh of generation.Depending on the region where the turbine resides, the lost revenue due to a single wind turbine forced outage would be between $1,200 and $2,000. The cost of emergency maintenance and other related expenses could quickly push the total outage expenses up to $5,000. Given that there are almost 13,000 General Electric 1.5-MW wind turbines in North America alone, the potential loss to the wind industry each year is likely in the tens of millions of dollars.A wind turbine retrofitted with a piston accumulator will experience a completely different, non-emergency response. The piston accumulator is immune from a catastrophic diaphragm failure, but the piston-cylinder seals will slowly wear over time. Only at that time will the pre-charge pressure slowly begin to drop. Instruments will signal and track the pressure decrease so that a work order can be issued for a maintenance technician to merely “top-off” the pre-charge pressure until the piston accumulator can be replaced at the next regularly scheduled maintenance outage. No muss, no fuss.。
海上风电的基本术语(中英文对照)
轮毂高度（风力发电机组）
height of the centre of the swept area of the wind turbine rotor above the mean sea level 风力发电机风轮掠扫面积的中心点距离平均海平面的高度
第四页，共24页。
3.9 fast ice cover固定冰盖 a rigid continuous cover of ice not in motion
静止状态下的连续刚性冰覆盖层
3.10 fetch风距 distance over which the wind blows constantly over the sea with approximately constant wind speed and direction 风以近似恒定的风速和风向持续地吹过海面所经过的距离
3.21 marine growth海生物 surface coating on structural components caused by plants, animals and bacteria 由动植物和细菌引起的结构部件表面上的覆盖物
第十页，共24页。
3.22 mean sea level平均海平面
负责海上风力发电机组的制造和生产的一方或多方
第九页，共24页。
3.20 marine conditions海洋条件 characteristics of the marine environment (waves, sea currents, water level, sea ice, marine growth,seabed movement and scour, etc.) which may affect the wind turbine behaviour 可能影响风力发电机组性能的海洋环境特性（海浪、洋 流、水位、海冰、海生物、海床运动和冲刷等）
风力机专业术语名词中英文对照
风力机wind turbine风电场wind power station wind farm风力发电机组wind turbine generator system WTGS 水平轴风力机horizontal axis wind turbine垂直轴风力机vertical axis wind turbine轮毂（风力机）hub (for wind turbine)机舱nacelle支撑结构support structure for wind turbine关机shutdown for wind turbine正常关机normal shutdown for wind turbine紧急关机emergency shutdown for wind turbine空转idling锁定blocking停机parking静止standstill制动器brake停机制动parking brake风轮转速rotor speed控制系统control system保护系统protection system偏航yawing设计和安全参数design situation设计工况design situation载荷状况load case外部条件external conditions设计极限design limits极限状态limit state使用极限状态serviceability limit states极限限制状态ultimate limit state最大极限状态ultimate limit state安全寿命safe life严重故障catastrophic failure潜伏故障latent fault dormant failure风特性风速wind speed风矢量wind velocity旋转采样风矢量rotationally sampled wind velocity 额定风速rated wind speed切入风速cut-in speed切出风速cut-out speed年平均annual average年平均风速annual average wind speed平均风速mean wind speed极端风速extreme wind speed 安全风速survival wind speed参考风速reference wind speed风速分布wind speed distribution瑞利分布RayLeigh distribution威布尔分布Weibull distribution风切变wind shear风廓线风切变律wind profile wind shear law风切变指数wind shear exponent对数风切变律logarithmic wind shear law风切变幂律power law for wind shear下风向down wind上风向up wind阵风gust粗糙长度roughness length湍流强度turbulence intensity湍流尺度参数turbulence scale parameter湍流惯性负区inertial sub-range风场wind site测量参数measurement parameters测量位置measurement seat最大风速maximum wind speed风功率密度wind power density风能密度wind energy density日变化diurnal variation年变化annual variation轮毂高度hub height风能wind energy标准大气状态standard atmospheric state风切变影响influence by the wind shear阵风影响gust influence风速频率frequency of wind speed环境environment工作环境operational environment气候climate海洋性气候ocean climate大陆性气候continental climate露天气候open-air climate室内气候indoor climate极端extreme日平均值daily mean极端最高extreme maximum年最高annual maximum年最高日平均温度annual extreme daily mean of temperature月平均温度mean monthly temperature空气湿度air humidity绝对湿度absolute humidity相对湿度relative humidity降水precipitation雨rain冻雨freezing rain霜淞rime雨淞glaze冰雹hail露dew雾fog盐雾salt fog雷暴thunderstorm雪载snow load标准大气压standard air pressure平均海平面mean sea level海拔altitude辐射通量radiant flux太阳辐射solar radiation直接太阳辐射direct solar radiation天空辐射sky radiation太阳常数solar constant太阳光谱solar spectrum黑体black body白体white body温室效应greenhouse effect环境温度ambient temperature表面温度surface temperature互联interconnection输出功率output power额定功率rated power最大功率maximum power电网连接点network connection point 电力汇集系统power collection system 风场电器设备site electrical facilities功率特性power performance静电功率输出net electric power output 功率系数power performance自由流风速free stream wind speed扫掠面积swept area轮毂高度hub height 测量功率曲线measurement power curve外推功率曲线extrapolated power curve年发电量annual energy production可利用率availability数据组功率特性测试data set for power performance measurement精度accuracy测量误差uncertainty in measurement分组方法method of bins测量周期measurement period测量扇区measurement sector日变化diurnal variations浆距角pitch angle距离常数distance constant试验场地test site气流畸变flow distortion障碍物obstacles复杂地形带complex terrain风障wind break声压级sound pressure level声级weighted sound pressure level; sound level视在声功率级apparent sound power level指向性directivity音值tonality声的基准面风速acoustic reference wind speed标准风速standardized wind speed基准高度reference height基准粗糙长度reference roughness length基准距离reference distance掠射角grazing angle风轮风轮wind rotor风轮直径rotor diameter风轮扫掠面积rotor swept area风轮仰角tilt angle of rotor shaft风轮偏航角yawing angle of rotor shaft风轮额定转速rated turning speed of rotor风轮最高转速maximum turning speed of rotor风轮尾流rotor wake尾流损失wake losses风轮实度rotor solidity实度损失solidity losses叶片数number of blades叶片blade等截面叶片constant chord blade变截面叶片variable chord blade叶片投影面积projected area of blade叶片长度length of blade叶根root of blade叶尖tip of blade叶尖速度tip speed浆距角pitch angle翼型airfoil前缘leading edge后缘tailing edge几何弦长geometric chord of airfoil平均几何弦长mean geometric of airfoil气动弦线aerodynamic chord of airfoil翼型厚度thickness of airfoil翼型相对厚度relative thickness of airfoil厚度函数thickness function of airfoil中弧线mean line弯度degree of curvature翼型族the family of airfoil弯度函数curvature function of airfoil叶片根梢比ratio of tip-section chord to root-section chord叶片展弦比aspect ratio叶片安装角setting angle of blade叶片扭角twist of blade叶片几何攻角angle of attack of blade叶片损失blade losses叶尖损失tip losses颤振flutter迎风机构orientation mechanism。
2017年11月托福真题回忆及解析
2017年11月托福真题回忆及解析不积跬步，无以至千里；不积小流，无以成江海。
对于托福考试而言，每天进步一点点，基础扎实一点点，通过考试就会更容易一点点。
无忧考网搜集整理了2017年11月托福真题回忆及解析，希望对大家有所帮助。
2017年11月举行了6场考试，时间分别是11月4日、11月11日、11月12日、11月18日、11月25日、11月26日。
以下内容仅供参考。
11月4日托福口语真题回忆：Task 1Children would behave negatively before they learn how to appropriately. Which of the following behavior would you consider to be the most negative behavior of child and why?1.Being selfish2.Being impolite3.Being loudTask 2When giving feedbacks to students, some teachers would like to talk to their students inperson, while some teachers would give written comments to students. Which do you prefer and why ?Task 3阅读标题：course catalog to provide more information原因 1: 学校能够在网上提前两个月为学生提供课程的相关信息，包括课程的作业和考试等相关情况，这样能让学生对要选读的课程更加了解。
原因 2：学生了解相关课程后能够提前去购买二手书，可以为他们省钱。
听力态度：赞成原因 1：了解课程要求信息能有助于学生知道这门课上需要做什么事情，是会写论文还是考试，从而选择合适的课程，不会轻易退课。
风电名词术语
名词术语英－汉对照表风力发电机组1、风力机wind turbine2、风力发电机组wind turbinegenerator system ; （缩写）WTGS (abbreviation)3、风电场wind power station；windfarm4、水平轴风力机horizontal axis windturbine5、垂直轴风力机vertical axis windturbine6、轮毂（风力机）hub（for windturbines）7、机舱nacelle8、支撑结构（风力机）supportstructure（for wind turbines）9、关机（风力机）shutdown（for windturbines）10、紧急关机（风力机）emergencyshutdown（for wind turbines）11、空转（风力机）idling（for windturbines）12、锁定（风力机）blocking（forwind turbines）13、停机parking14、静止standstill15、制动器（风力机）brake（forwind turbines）16、停机制动（风力机）parkingbrake（for wind turbines）17、风轮转速（风力机）rotorspeed（for wind turbines）18、控制系统（风力机）controlsystem（for wind turbines）19、保护系统（风力发电机组）protection system （for WTGS）设计和安全参数20、设计工况design situation21、载荷情况load case22、外部条件（风力机）externalconditions（for wind turbines）23、设计极限design limits24、极限状态limit state25、使用极限状态serviceabilitylimit states26、极限限制状态ultimate limitstate27、安全寿命safe life28、严重故障（风力机）catastrophicfailure（for wind turbines）29、潜伏故障latent fault；dormant failure风特性30、风速wind speed31、风矢量wind velocity32、旋转采样风矢量rotationallysampled wind velocity33、额定风速（风力机）rated windspeed（for wind turbines）34、切入风速cut--in wind speed35、切出风速cut--out wind speed36、年平均annual average37、年平均风速annual average windspeed38、平均风速mean wind speed39、极端风速extreme wind speed40、安全风速survival wind speed（deprecated）41、参考风速reference windspeed42、风速分布wind speeddistribution43、瑞利分布RayLeighdistribution44、威布尔分布Weibulldistribution45、风切变wind shear46、风廓线风切变律windprofile；wind shear law47、风切变指数wind shearexponent48、对数风切变律logarithmicwind shear law49、风切变幂律power law forwind shear50、下风向down wind51、上风向upwind52、阵风gust53、粗糙长度roughness length54、湍流强度turbulence intensity55、湍流尺度参数turbulence scaleparameter56、湍流惯性负区inertialsub—range57、风场wind site58、风电场wind farm59、测量参数measurementparameters60、测量位置measurement seat61、最大风速maximum windspeed62、风功率密度wind powerdensity63、风能密度wind energy density64、日变化diurnal variation65、年变化annual variation66、轮毂高度hub height67、风能wind energy68、标准大气状态standardatmospheric state69、风切变影响influence by thewind shear70、阵风影响gust influence71、风速频率frequency of windspeed72、环境environment73、工作环境operationalenvironment 74、气候climate75、海洋性气候ocean climate76、大陆性气候continentalclimate77、露天气候open-air climate78、室内气候indoor climate79、极端extreme80、日平均值daily mean81、极端最高extreme maximum82、年最高annual maximum83、年最高日平均温度annualextreme daily mean of temperature 84、月平均温度mean monthlytemperature85、空气湿度air humidity86、绝对湿度absolute humidity87、相对湿度relative humidity88、降水precipitation89、雨rain90、冻雨freezing rain91、霜淞rime92、雨淞glaze93、冰雹hail94、露dew95、雾fog96、盐雾salt fog97、雷暴thunderstorm98、雪载snow load99、标准大气压standard airpressure100、平均海平面mean sea level 101、海拔altitude102、辐射通量radiant flux103、太阳辐射solar radiation 104、直接太阳辐射direct solar radiation105、天空辐射sky radiation106、太阳常数solar constant 107、太阳光谱solar spectrum 108、黑体black body109、白体white body110、温室效应greenhouse effect 111、环境温度ambient temperature112、表面温度surface temperature 与电网联接113、互联（风力发电机组）interconnection （for WTGS）114、输出功率（风力发电机组）output power （for WTGS）115、额定功率（风力发电机组）rated power （for WTGS）116、电网联接点（风力发电机组）network connection point （for WTGS）117、电力汇集系统（风力发电机组）power collection system （for WTGS）118、风场电气设备site electrical facilities功率特性测试119、功率特性power performance120、净电功率输出net electric power output121、功率系数power coefficient 122、自由流风速free stream wind speed123、扫掠面积swept area 124、测量功率曲线measured power curve125、外推功率曲线extrapolated power curve126、年发电量annual energy production127、可利用率（风力发电机组）availability （for WTGS）128、数据组（测试功率特性）data set （for power performance measurement）129、精度（风力发电机组）accuracy （for WTGS）130、测量误差uncertainty in measurement131、分组方法method of bins 132、测量周期measurement period133、测量扇区measurement sector 134、距离常数distance constant 135、试验场地test site136、气流畸变flow distortion 137、障碍物obstacles138、复杂地形带complex terrain139、风障wind break140、声压级sound pressure level 141、声级weighted sound pressure level；sound level142、视在声功率级apparent sound power level143、指向性（风力发电机组）directivity （for WTGS）144、音值tonality145、声的基准风速acoustic reference wind speed146、标准风速standardized wind speed147、基准高度reference height 148、基准粗糙长度reference roughness length149、基准距离reference distance150、掠射角grazing angle 151、比恩法method of bins152、标准误差standard uncertainty 153、风能利用系数rotor power coefficient154、力矩系数torque coefficient 155、额定力矩系数rated torque coefficient156、起动力矩系数starting torque coefficient157、最大力矩系数maximum torque coefficient158、过载度ratio of over load 159、风力发电机组输出特性output characteristic of WECS 160、调节特性regulating characteristics161、平均噪声average noise level 162、机组效率efficiency of WECS163、使用寿命service life164、度电成本cost per kilowatt hour of the electricity generated by WECS风轮165、风轮wind rotor166、风轮直径rotor diameter 167、风轮扫掠面积rotor swept area168、风轮仰角tilt angle of rotor shaft169、风轮偏航角yawing angle of rotor shaft170、风轮额定转速rated turning sped of rotor171、风轮最高转速maximum turning speed of rotor172、风轮尾流rotor wake173、尾流损失wake losses 174、风轮实度rotor solidity 175、实度损失solidity losses 176、叶片数number of blades 177、叶片blade178、等截面叶片constant chord blade179、变截面叶片variable chord blade180、叶片投影面积projected area of blade181、叶片长度length of blade 182、叶根root of blade183、叶尖tip of blade184、叶尖速度tip speed185、桨距角pitch angle 186、翼型airfoil187、前缘leading edge188、后缘tailing edge189、几何弦长geometric chord of airfoil190、平均几何弦长mean geometric chord of airfoil191、气动弦线aerodynamic chord of airfoil192、翼型厚度thickness of airfoil 193、翼型相对厚度relative thickness of airfoil194、厚度函数thickness function of airfoil195、中弧线mean line196、弯度degree of curvature 197、弯度函数curvature function of airfoil198、翼型族the family of airfoil 199、叶片根梢比ratio of tip-section chord to root-section chord200、叶片展弦比aspect ratio 201、叶片安装角setting angle of blade202、叶片扭角twist of blade 203、叶片几何攻角angle of attack of blade204、叶尖损失tip losses205、叶片损失blade losses 206、颤振flutter207、迎风机构orientation mechanism208、调速机构regulating mechanism209、风轮偏侧式调速机构regulating mechanism of turning wind rotor out of the wind sideward 210、变桨距调节机构regulating mechanism by adjusting the pitch of blade211、整流罩nose cone212、顺桨feathering213、阻尼板spoiling flap214、风轮空气动力特性aerodynamic characteristics of rotor215、叶尖速度比（高速性系数）tip-speed ratio216、额定叶尖速度比（标准高速性系数）rated tip-speed ratio 217、升力系数lift coefficient 218、阻力系数drag coefficient 219、推或拉力系数thrust coefficient传动系统220、传动比transmission ratio 221、齿轮gear222、齿轮副gear pair223、平行轴齿轮副gear pair with parallel axes224、齿轮系train of gears225、行星齿轮系planetary gear train226、小齿轮pinion227、大齿轮wheel, gear228、主动齿轮driving gear229、从动齿轮driven gear230、行星齿轮planet gear231、行星架planet carrier232、太阳轮sun gear233、内齿圈ring gear, annulus gear 234、外齿轮external gear235、内齿轮internal gear236、内齿轮副internal gear pair 237、增速齿轮副speed increasing gear pair238、增速齿轮系speed increasing gear train239、中心距center distance240、增速比speed increasing ratio 241、齿面tooth flank242、工作齿面working flank 243、非工作齿面non-working flank 244、模数module245、齿数number of teeth246、啮合干涉meshing interference 247、齿廓修形profile modification, profile correction248、啮合engagement, mesh 249、齿轮的变位addendum modification on gears250、变位齿轮gears with addendum modification251、圆柱齿轮cylindrical gear 252、直齿圆柱齿轮spur gear 253、斜齿圆柱齿轮helical gear, single-helical gear254、节点pitch point255、节圆pitch circle256、齿顶圆tip circle257、齿根圆toot circle258、直径和半径diameter and radius259、齿宽face width260、齿厚tooth thickness261、压力角pressure angle262、圆周侧隙circumferential backlash263、蜗杆worm264、蜗轮worm wheel265、联轴器coupling266、刚性联轴器rigid coupling 267、万向联轴器universal coupling268、安全联轴器security coupling 269、齿tooth270、齿槽tooth space271、斜齿轮helical gear272、人字齿轮double-helical gear 273、齿距pitch274、法向齿距normal pitch275、轴向齿距axial pitch276、齿高tooth depth277、输入轴input shaft278、输出轴output shaft279、柱销pin280、柱销套roller281、行星齿轮传动机构planetary gear drive mechanism282、中心轮center gear283、单级行星齿轮系single planetary gear train284、多级行星齿轮系multiple-stage planetary gear train 285、柔性齿轮flexible gear286、刚性齿轮rigidity gear287、柔性滚动轴承flexible rolling bearing288、输出联接output coupling 289、刚度rigidity290、扭转刚度torsional rigidity 291、弯曲刚度flexural rigidity 292、扭转刚度系数coefficient of torsional rigidity293、启动力矩starting torque 294、传动误差transmission error 295、传动精度transmission accuracy296、固有频率natural frequency 297、弹性联接elastic coupling 298、刚性联接rigid coupling 299、滑块联接oldham coupling 300、固定联接integrated coupling 301、齿啮式联接dynamic coupling 302、花键联接splined coupling 303、牙嵌式联接castellated coupling304、径向销联接radial pin coupling305、周期振动periodic vibration 306、随机振动random vibration 307、峰值peak value308、临界阻尼critical damping 309、阻尼系数damping coefficient 310、阻尼比damping ratio311、减震器vibration isolator 312、振动频率vibration frequency 313、幅值amplitude314、位移幅值displacement amplitude315、速度幅值velocity amplitude 316、加速度幅值acceleration amplitude发电机317、同步电机synchronous generator318、异步电机asynchronous generator319、感应电机induction generator 320、转差率slip321、瞬态电流transient current 322、笼形cage323、绕线转子wound rotor324、绕组系数winding factor 325、换向器commutator326、集电环collector ring327、换向片commutator segment 328、励磁响应excitation response 制动系统329、制动系统braking system 330、制动机构brake mechanism 331、正常制动系normal braking system332、紧急制动系emergency braking system333、空气制动系air braking system 334、液压制动系hydraulic braking system335、电磁制动系electromagnetic braking system336、机械制动系mechanical braking system337、辅助装置auxiliary device 338、制动器释放braking releasing 339、制动器闭合brake setting 340、液压缸hydraulic cylinder 341、溢流阀relief valve342、泄油drain343、齿轮马达gear motor344、齿轮泵gear pump345、电磁阀solenoid valve346、液压过滤器hydraulic filter 347、液压泵hydraulic pump 348、液压系统hydraulic system 349、油冷却器oil cooler350、压力控制阀pressure control valve351、压力继电器pressure switch 352、减压阀reducing valve353、安全阀safety valve354、设定压力setting pressure 355、切换switching356、旋转接头rotating union 357、压力表pressure gauge358、液压油hydraulic fluid359、液压马达hydraulic motor 360、油封oil seal361、刹车盘brake disc362、闸垫brake pad363、刹车油brake fluid364、闸衬片brake lining偏航系统365、滑动制动器sliding shoes 366、偏航yawing367、主动偏航active yawing 368、被动偏航passive yawing 369、偏航驱动yawing driven 370、解缆untwist塔架371、塔架tower372、独立式塔架free stand tower 373、拉索式塔架guyed tower 374、塔影响效应influence by the tower shadow 控制与监测系统375、远程监视telemonitoring 376、协议protocol377、实时real time378、单向传输simplex transmission379、半双工传输half-duplex transmission380、双工传输duplex transmission 381、前置机front end processor 382、运动终端remote terminal unit(RTU)383、调制解调器modulator-demodulator(modem) 384、数据终端设备data terminal equipment (DTE)385、接口interface386、数据电路data circuit387、信息information388、状态信息state information 389、分接头位置信息tap position information390、监视信息monitored information391、事件信息event information 392、设备故障信息equipment failure information393、返回信息return information 394、告警alarm395、设定值set point value396、累计值integrated total, integrated value397、瞬时测值instantaneous measured398、计量值counted measured, metered measured, metered reading 399、确认acknowledgement 400、信号signal401、模拟信号analog signal 402、命令command403、字节byte404、比特bit405、地址address406、波特baud(Bd)407、编码encode408、译码decode409、代码code410、集中控制centralized control 411、可编程序控制programmable control412、微机程控minicomputer program control413、模拟控制analogue control 414、数字控制digital control 415、强电控制strong current control416、弱电控制weak current control 417、单元控制unit control418、就地控制local control419、联锁装置interlocker420、模拟盘analogue board421、配电盘switch board422、控制台control desk423、紧急停车按钮emergency stop push-button424、限位开关limit switch425、限速开关limit speed switch 426、有载指示器on-load indicator 427、位置指示器position indicator 428、屏幕显示screen display 429、指示灯display lamp430、启动信号starting signal 431、公共供电点point of common coupling432、闪变flicker433、数据库data base434、硬件hardware435、硬件平台hardware platform 436、层layer/level/class437、模型model438、响应时间response time 439、软件software440、软件平台software platform 441、系统软件system software 442、自由脱扣trip-free443、基准误差basic error 444、一对一控制方式one-to-one control mode445、一次电流primary current 446、一次电压primary voltage 447、二次电流secondary current 448、二次电压secondary voltage 449、低压电器low voltage apparatus 450、额定工作电压rated operational voltage451、额定工作电流rated operational current452、运行管理operation management453、安全方案safety concept 454、外部条件external conditions (for WTGS)455、保护系统protection system (for WTGS)456、失效failure457、故障fault458、控制柜control cabinet459、冗余技术redundancy460、正常关机normal shutdown (for wind turbines)461、失效-安全fail-safe462、排除故障clearance463、空转idling (for wind turbines) 464、外部动力源external power supply465、锁定装置locking device 466、运行转速范围operating rotational speed range467、临界转速activation rotational speed468、最大转速maximum rotational speed469、过载功率over power (for wind turbines)470、临界功率activation power (for wind turbines)471、最大功率maximum power (for wind turbines)472、短时切出风速short-term cut-out wind speed473、外联机试验field test with turbine474、试验台test-bed475、台架试验test on bed476、防雷系统lightning protection system (LPS)477、外部防雷系统external lightning protection system478、内部防雷系统internal lightning protection system479、等电位连接equipotential bonding480、接闪器air-termination system 481、引下线down-conductor 482、接地装置earth-termination system483、接地线earth conductor484、接地体earth electrode485、环形接地体ring earth electrode 486、基础接地体foundation earth electrode487、等电位连接带bonding bar 488、等电位连接导体bonding conductor489、保护等级protection lever 490、防雷区lightning protection zone (LPZ)491、雷电流lightning current 492、电涌保护器surge suppressor 493、共用接地系统common earthing system494、接地基准点earthing reference points (ERP)495、持续运行continuous operation 496、持续运行的闪变系数flicker coefficient for continuous operation 497、闪变阶跃系数flicker step factor498、最大允许功率maximum permitted power499、最大测量功率maximum measured power500、电网阻抗相角network impedance phase angle 501、正常运行normal operation 502、功率采集系统power collection system503、额定视在功率rated apparent power504、额定电流rated current505、额定无功功率rated reactive power506、停机standstill507、起动start-up508、切换运行switching operation 509、扰动强度turbulence intensity 510、电压变化系数voltage change factor511、风机端口wind turbine terminals512、风力机最大功率maximum power of wind turbine513、风力机停机parked wind turbine514、安全系统safety system515、控制装置control device 516、额定负载rated load517、周期period518、相位phase519、频率frequency520、谐波harmonics521、瞬时值instantaneous value 522、同步synchronism523、振荡oscillation524、共振resonance525、波wave526、辐射radiation527、衰减attenuation528、阻尼damping529、畸变distortion530、电electricity531、电的electric532、静电学electrostatics533、电荷electric charge534、电压降voltage drop535、电流electric current536、导电性conductivity537、电压voltage538、电磁感应electromagnetic induction539、励磁excitation540、电阻率resistivity541、导体conductor542、半导体semiconductor543、电路electric circuit544、串联电路series circuits 545、电容capacitance546、电感inductance547、电阻resistance548、阻抗impedance549、电抗reactance550、传递比transfer ratio551、交流电压alternating voltage 552、交流电流alternating current 553、脉动电压pulsating voltage 554、脉动电流pulsating current 555、直流电压direct voltage556、直流电流direct current557、瞬时功率instantaneous power 558、有功功率active power559、无功功率reactive power 560、有功电流active current 561、无功电流reactive current 562、功率因数power factor563、中性点neutral point564、相序sequential order of the phases565、电气元件electrical device 566、接线端子terminal567、电极electrode568、地earth; ground569、接地电路earthed circuit 570、接地电阻resistance of an earthed conductor; earth resistance 571、绝缘子insulator572、绝缘套管insulating bushing 573、母线busbar574、线圈coil575、螺线管solenoid576、绕组winding577、电阻器resistor578、电感器inductor 579、电容器capacitor580、继电器relay581、电能转换器electric energy transducer582、电机electric machine583、发电机generator584、电动机motor585、变压器transformer586、变流器converter587、变频器frequency converter 588、整流器rectifier589、逆变器inverter590、传感器sensor591、耦合器electric coupling 592、放大器amplifier593、振荡器oscillator594、滤波器filter595、半导体器件semiconductor device596、光电器件photoelectric device 597、触头contact598、开关设备switchgear599、控制设备controlgear600、闭合电路closed circuit 601、断开电路open circuit602、通断switching603、联结connection604、互联interconnection605、串联series connection606、并联parallel connection 607、星形联接star connection 608、三角形联接delta connection 609、主电路main circuit610、辅助电路auxiliary circuit 611、控制电路control circuit 612、信号电路signal circuit613、保护电路protective circuit 614、换接change-over switching 615、换向commutation616、输入功率input power617、输入input618、输出output619、负载load620、加载to load621、充电to charge622、放电to discharge623、有载运行on-load operation 624、空载运行no-load operation 625、开路运行open-circuit operation626、短路运行short-circuit operation627、满载full load628、效率efficiency629、损耗loss630、过电压over-voltage631、过电流over-current632、欠电压under-voltage633、特性characteristic634、绝缘物insulant635、隔离to isolate636、绝缘insulation637、绝缘电阻insulation resistance 638、品质因数quality factor 639、泄漏电流leakage current 640、闪烙flashover641、短路short circuit642、噪声noise643、极限值limiting value644、额定值rated value645、定额rating646、环境条件environment condition647、使用条件service conditions 648、工况operating conditions 649、额定工况rated condition 650、负载比duty ratio651、绝缘比insulation level652、介质试验dielectric test 653、常规试验routine test654、抽样试验sampling test 655、验收试验acceptance test 656、投运试验commissioning test 657、维护试验maintenance test 658、加速accelerating659、特性曲线characteristic curves 660、额定电压rated voltage661、额定频率rated frequency 662、额定转速rated speed663、温升temperature rise664、温度系数temperature coefficient665、端电压terminal voltage 666、短路电流short circuit current 667、可靠性reliability668、有效性availability669、耐久性durability670、维修maintenance671、维护preventive maintenance 672、工作时间operating time 673、待命时间standby time674、修复时间repair time675、寿命life676、使用寿命useful life677、平均寿命mean life678、耐久性试验endurance test 679、寿命试验life test680、可靠性测定试验reliability determination681、现场可靠性试验field reliability test682、加速试验accelerated test 683、安全性fail safe684、应力stress685、强度strength686、试验数据test data687、现场数据field data688、电触头electrical contact 689、主触头main contact690、击穿breakdown691、耐电压proof voltage692、放电electrical discharge 693、透气性air permeability 694、电线电缆electric wire and cable695、电力电缆power cable 696、通信电缆telecommunication cable; communication cable697、油浸式变压器oil-immersed type transformer698、干式变压器dry-type transformer699、自耦变压器auto-transformer 700、有载调压变压器transformer fitted with OLTC(on-load tap-changer)701、空载电流non-load current 702、阻抗电压impedance voltage 703、电抗电压reactance voltage 704、电阻电压resistance voltage 705、分接tapping706、配电电器distributing apparatus707、控制电器control apparatus 708、开关switch709、熔断器fuse710、断路器；自动开关circuit breaker; automatic circuit breaker 711、控制器controller712、接触器contactor713、机械寿命mechanical endurance714、电气寿命electrical endurance 715、旋转电机electrical rotating machine716、直流电机direct current machine717、交流电机alternating current machine718、同步电机synchronous machine719、异步电机asynchronous machine720、感应电机induction machine 721、励磁机exciter722、饱和特性saturation characteristic723、开路特性open-circuit characteristic724、负载特性load characteristic 725、短路特性short-circuit characteristic726、额定转矩rated load torque 727、规定的最初起动转矩specified breakaway torque728、交流电动机的最初起动电流breakaway starting current of an a.c. 729、同步转速synchronous speed 730、转差率slip731、短路比short-circuit ratio 732、同步系数synchronizing coefficient733、空载no-load734、系统system735、触电；电击electric shock 736、正常状态normal condition 737、接触电压touch voltage 738、跨步电压step voltage739、对地电压voltage to earth 740、触电电流shock current 741、残余电流residual current 742、安全阻抗safety impedance 743、安全距离safe distance744、安全标志safety marking 745、安全色safety color746、中性点有效接地系统system with effectively earthed neutral 747、检修接地inspection earthing 748、工作接地working earthing 749、保护接地protective earthing 750、重复接地iterative earth 751、故障接地fault earthing 752、过电压保护over-voltage protection753、过电流保护over-current protection754、断相保护open-phase protection755、防尘dust-protected756、防溅protected against splashing757、防滴protected against dropping water758、防浸水protected against the effects of immersion759、过电流保护装置over-current protective device760、保护继电器protective relay 761、接地开关earthing switch 762、漏电断路器residual currentcircuit-breaker763、灭弧装置arc-control device 764、安全隔离变压器safety isolating transformer765、避雷器surge arrester;lightning arrester766、保护电容器capacitor for voltage protection767、安全开关safety switch 768、限流电路limited current circuit769、振动vibration770、腐蚀corrosion771、金属腐蚀corrosion of metals 772、化学腐蚀chemical corrosion 773、点腐蚀spot corrosion774、贮存storage775、贮存条件storage condition 776、运输条件transportation condition777、空载最大加速度maximum bare table acceleration电力金具778、悬垂线夹suspension clamp 779、耐张线夹strain clamp780、挂环link781、挂板clevis & tongue782、球头挂环ball-eye783、球头挂钩ball-hook784、U形挂环shackle785、U形螺丝U-bolt786、联板yoke plate787、牵引板towing plate788、挂钩hook789、吊架hanger790、调整板adjusting plate791、花篮螺丝turn buckle792、接续管splicing sleeve793、补修管repair sleeve794、跳线线夹jumper clamp 795、防振锤damper796、均压环grading ring797、屏蔽环shielding ring798、间隔棒spacer799、重锤counter weight800、线卡子guy clip801、心形环thimble802、设备线夹terminal connector 803、T形线夹T-connector804、硬母线固定金具bus-bar support805、母线间隔垫bus-bar separator 806、母线伸缩节bus-bar expansion joint807、外观检查visual inspection 808、振动试验vibration tests 809、老化试验ageing tests810、冲击动荷试验impulse load tests811、耐腐试验corrosion resistance tests812、棘轮扳手ratchet spanner 813、专用扳手special purpose spanner814、万向套筒扳手flexible spanner hand815、可调钳adjustable pliers 816、夹线器conductor holder 817、电缆剪cable cutter818、卡线钳conductor clamp 819、单卡头single clamp820、双卡头double clamp821、安全帽safety helmet822、安全带safety belt823、绝缘手套insulating glove 824、绝缘靴insulating boots 825、护目镜protection spectacles 826、缝焊机seam welding machine。
关于风车的英文介绍作文
关于风车的英文介绍作文英文回答：Wind turbines are becoming increasingly popular as a source of renewable energy. They are a clean and sustainable way to generate electricity, and they can help to reduce our dependence on fossil fuels.Wind turbines work by converting the kinetic energy of the wind into electrical energy. The blades of the turbine are attached to a rotor, which is connected to a generator. When the wind blows, it turns the blades, which in turn spins the rotor and the generator. The generator converts the mechanical energy of the spinning rotor into electrical energy.Wind turbines can be used to generate electricity for a variety of purposes, including powering homes, businesses, and communities. They can also be used to generate electricity for the grid.There are many benefits to using wind turbines. Wind turbines are a clean and sustainable source of energy. They do not produce any emissions, so they do not contribute to air pollution or climate change. Wind turbines are also a relatively inexpensive source of energy. The cost of wind energy has been declining in recent years, and it is nowone of the most cost-effective forms of renewable energy.However, there are also some challenges associated with using wind turbines. One challenge is that wind turbinescan be noisy. The noise from wind turbines can be anuisance to people who live near them. Another challenge is that wind turbines can interfere with wildlife. Birds and bats can be killed by wind turbines, and wind turbines can also disrupt the migration patterns of birds.Overall, wind turbines are a promising source of renewable energy. They are a clean, sustainable, and relatively inexpensive way to generate electricity. However, there are some challenges associated with using wind turbines, such as noise and wildlife interference.中文回答：风力涡轮机作为可再生能源的一种正变得越来越流行。
关于风车发电的作文
关于风车发电的作文英文回答：Wind turbines, also known as windmills, are devicesthat convert the kinetic energy of the wind into electrical energy. They have become a popular choice for renewable energy generation due to their numerous advantages.Firstly, wind turbines are environmentally friendly. Unlike fossil fuel power plants, wind turbines do not emit harmful pollutants or greenhouse gases into the atmosphere. This helps to reduce air pollution and combat climate change.Secondly, wind energy is a renewable and abundant resource. Wind is a natural occurrence that is constantly replenished, making it a sustainable source of power. As long as there is wind, wind turbines can continue to generate electricity.Furthermore, wind turbines have a relatively low operational cost. Once the initial investment is made, the cost of maintaining and operating wind turbines isrelatively low compared to other forms of energy generation. This makes wind energy an economically viable option.In addition, wind turbines can be installed in various locations. They can be placed on land or offshore, depending on the availability of suitable sites. This flexibility allows wind turbines to be utilized indifferent regions, making wind energy accessible to more people.However, there are also challenges and limitations associated with wind turbines. One major limitation istheir dependence on wind speed. Wind turbines require a minimum wind speed to start generating electricity, andthey have an upper limit beyond which they cannot operate safely. Therefore, wind turbines may not be suitable for regions with low wind speeds or extreme weather conditions.Moreover, wind turbines can have visual and noiseimpacts. Some people find the appearance of wind turbinesto be visually unappealing, especially when they are installed in scenic areas. Additionally, the rotatingblades can produce a certain level of noise, which maycause disturbances to nearby residents.Despite these challenges, the benefits of wind turbines outweigh the drawbacks. With advancements in technology, wind turbines are becoming more efficient and reliable.They play a crucial role in reducing dependence on fossil fuels and promoting a cleaner and more sustainable future.中文回答：风力发电机，也被称为风车，是将风的动能转化为电能的装置。
风电专业术语中英文对照
36、 下风向 down wind
实用标准
59、 冻雨 freezing rain
37、 上风向 up wind
60、 雾凇;霜 rime
38、 阵风 gust
61、 雾 fog
39、 粗糙长度 roughness length
62、 盐雾 salt fog
40、 湍流强度 turbulence intensity
17、 风轮转速（风力机）rotor speed (for wind 33、 平均风速 mean wind speed
turbine)
34、 极端风速 extreme wind speed
18、 控制系统（风力机）control system (for wind
文档
35、 风切变 wind shear
功率特性测试
55、 空气湿度 air humidity
75、 功率特性 power performance
56、 绝对湿度 absolute humidity
76、 功率系数 power coefficient
57、 相对湿度 relative humidity
77、 扫掠面积 swept area
112、 风轮 wind rotor
94、 基准高度 reference height
113、 风轮直径 rotor diameter
95、 基准粗糙长度 reference roughness length 114、 风轮扫掠面积 rotor swept area
96、 基准距离 reference distance
159、 叶尖速比 tip-speed ratio
181、 增速齿轮副 speed increasing gear pair
风力发电机组术语(中英文对照)
风力发电机组术语(中英文对照),国家标准1范围本标准规定了风力发电机组常用基本术语和定义。
本标准适用于风力发电机组。
其它标准中的术语部分也应参照使用。
2定义本标准采用下列定义。
2.1风力机和风力发电机组2.1.1风力机wind turbine将风的动能转换为另一种形式能的旋转机械。
2.1.2风力发电机组wind turbine generator system;WTGS(abbreviation)将风的动能转换为电能的系统。
2.1.3风电场wind power station；wind farm由一批风力发电机组或风力发电机组群组成的电站。
2.1.4水平轴风力机horizontal axis wind turbine风轮轴基本上平行于风向的风力机。
2.1.5垂直轴风力机vertical axis wind turbine风轮轴垂直的风力机。
2.1.6轮毂（风力机）hub（for wind turbines）将叶片或叶片组固定到转轴上的装置。
2.1.7机舱nacelle设在水平轴风力机顶部包容电机、传动系统和其它装置的部件。
2.1.8支撑结构（风力机）support structure（for wind turbines）由塔架和基础组成的风力机部分。
2.1.9关机（风力机）shutdown（for wind turbines）从发电到静止或空转之间的风力机过渡状态。
2.1.10正常关机（风力机）normal shutdown（for wind turbines）全过程都是在控制系统控制下进行的关机。
2.1.11紧急关机（风力机）emergency shutdown（for wind turbines）保护装置系统触发或人工干预下，使风力机迅速关机。
2.1.12空转（风力机）idling（for wind turbines）风力机缓慢旋转但不发电的状态。
2.1.13锁定（风力机）blocking（for wind turbines）利用机械销或其它装置，而不是通常的机械制动盘，防止风轮轴或偏航机构运动。
风车英文简介作文带翻译
风车英文简介作文带翻译英文：Wind turbines, also known as windmills or wind generators, are devices that convert wind power into electrical energy. They consist of a tower with blades attached to a rotor, which is connected to a generator. When the wind blows, the blades rotate, which in turnrotates the rotor and generates electricity.One of the advantages of wind turbines is that they are a clean and renewable source of energy. Unlike fossil fuels, wind power does not produce harmful emissions or contribute to climate change. Additionally, wind turbines can be installed in remote areas, providing electricity to communities that may not have access to traditional power sources.However, there are also some challenges associated with wind turbines. One issue is that they can be noisy,particularly if they are located near residential areas. Additionally, wind turbines can be expensive to install and maintain, which can limit their accessibility in some regions.Despite these challenges, wind turbines are becoming increasingly popular as a source of renewable energy. In fact, wind power is now the fastest-growing source of electricity in the world. As technology continues to improve, it is likely that wind turbines will become even more efficient and cost-effective in the years to come.中文：风力发电机，也称风车或风力发电机，是将风能转化为电能的设备。
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[3]
where u is the blade tip speed, and Ω and R are the angular velocity and the radius of the turbine rotor, respectively.
Overview of different types of wind energy converters
Lift and Drag Coefficients
The lift and drag coefficients CL and CD are functions of the angle of attack α and the shape of the airfoil. For a typical aerofoil they look as in the figure below:
Tip Speed Ratio
One very important parameter for all types of rotodynamic machines is the ”tip speed ratio”, λ, which is the ratio of the translational speed at the tip of the blade to the velocity of the free stream of fluid:
Airfoils and General Concepts of amics
Airfoils are structures with specific geometric shapes that are used to generate mechanical forces due to the relative motion of the airfoil and a surrounding fluid. Wind turbine blades use airfoils to develop mechanical power. The cross-sections of wind turbine blades have the shape of airfoils. The width and length of the blade are functions of the desired aerodynamic performance, the maximum desired rotor power, the assumed airfoil properties, and strength considerations.
Reversibility of turbomachines
A propeller (axial fan rotor) and a wind turbine rotor are completely reversible. They are described by the same basic theoretical considerations.
Lift and drag forces are due to pressure differentials generated by the fluid flowing around the solid body. The drag force is caused by fluid friction and is never zero. Lift and drag values can be found through integrating the pressure values along the surface of the body (along the perimeter of a section parallel to the flow).
Airfoil Terminology -2
The camber is the distance between the mean camber line and the chord line, measured perpendicular to the chord line. The thickness is the distance between the upper and lower surfaces, also measured perpendicular to the chord line. Finally, the angle of attack,α, is defined as the angle between the relative wind (Urel) and the chord line.
Airfoil Terminology -1
The mean camber line is the locus of points halfway between the upper and lower surfaces of the airfoil. The most forward and rearward points of the mean camber line are on the leading and trailing edges, respectively. The straight line connecting the leading and trailing edges is the chord line of the airfoil, and the distance from the leading to the trailing edge measured along the chord line is designated the chord, c, of the airfoil.
Thrust and Torque
Thrust is the axial force produced by a propeller (or by a jet stream) and used for driving a body immersed in a fluid. Torque is the load in energy terms [N.m] that delivers positive rotating motion (in turbines) or a negative braking force (in propellers). It is basically proportional to the thrust. Torque and thrust are linked to the aerodynamic forces (lift and drag forces) created by the fluid flowing around the blades of the propeller or turbine. The productivity of a propeller is measured by the thrust, while the torque is the load that the driving engine should overcome. The productivity (but not the efficiency) of a turbine is measured by the produced torque, while the thrust is a useless axial force that the turbine casing or foundation must withstand.
Assoc. Prof. Hristo Nedev Hristov, Ph.D
Department Power Engineering Faculty of Mechanical and Precision Engineering
Technical University of Gabrovo
Introduction
Forces and moments on an airfoil section
Lift force – defined to be perpendicular to direction of the oncoming air flow. The lift force is a consequence of the unequal pressure on the upper and lower airfoil surfaces. Drag force – defined to be parallel to the direction of the oncoming air flow. The drag force is due both to viscous friction forces at the surface of the airfoil and to unequal pressure on the airfoil surfaces facing toward and away from the oncoming flow. Pitching moment – defined to be about an axis perpendicular to the airfoil crosssection.
Basic Wind Turbine Aerodynamics. The Betz Limit
The Wind
• The wind is solar power in mechanical form.
• A small part (around 2 %) of the energy of solar radiation on Earth is converted into kinetic energy of flowing air – the wind.
Lift and Drag Forces
Drag and lift forces induced by fluid flowing around a solid structure. The thin flat plate as an example: