电子与信息工程外文翻译
电子信息工程 外文翻译 外文文献 英文文献 文献翻译
Technology and Application of Fieldbus Control System ---------IntelligentEquipment & Measurement And Control System Based on DeviceNetPromoted by the new technological revolution that automation control technology is tending digitization and internet in the field of automation industry, Shanghai Aton Electric Co., Ltd. developed Intelligent Equipment & Measurement And Control System Based on DeviceNet as a high and new technology industrialization model project. It was a state hi-tech development project of 2000 and was approved by the State Committee of Technology. Shanghai Aton Electric Co., Ltd. constructed production line of intelligent controller of pump and valve, relying on Shanghai Electric (Group) Corporation; constructed measurement and control system FCS R&D center of intelligent controller of pump and valve and built up mass production R&D basis, cooperating with Shanghai Jiaotong University and Shanghai University; constructed FCS remote diagnosis and service center of intelligent controller of pump and valve; constructed FCS training center of intelligent controller of pump and valve; founded mass production R&D basis along with the Rockwell Laboratory of Shanghai Jiaotong University and CIMS Center.1 Summary(1)Fieldbus control system is a system applied to field of production and microcomputerized measurement control equipment to realize both-way multinode serial communications. It is also called low-level control network for open, digital and multiplespot communications.Application: Flow Control System of Manufacturing; Process Control System; Traffic Control & Management; Building Automation. Features: Fieldbus control system is low-level low-bandwidth digital communication and control network in industrial system as well as open system connecting microcomputerized appearance. Intelligent instrument and controller are equal to microcomputer. They make up network with Fieldbus control system as the links to complete digital communication and other tasks.(2)Difference between FCS and DCS,FCS is updated control system after DCS integrated with digital control system and distributing control system. It solves the problem that in traditional DCS, devices made by different manufacturers cannot be connected. They can't realize exchange and operation to organize an network system with wider range of information sharing. It conquers the defect that special closed system for network should be used for communication in DCS to realize various functions of integrated automation. It turns the distributing structure combiningconcentration with deconcentration in DCS into new-type full distributing structure. It releases the control function to the field thoroughly and makes it possible to realize basic control function by means of fieldbus equipment itself. FCS breaks the traditional structure form of control system. The traditional analog control system adopts one-to-one equipment tie-wire and puts up connections respectively according to control loop. FCS adopts intelligent field equipment to place the control module, all input/output modules that used to be in the control chamber of DCS into field equipment. Since field equipment has ability to communicate, the field measuring and transferring instruments can transfer signals to actuating mechanism such as valve directly. Its control function can be fulfilled directly on the spot independent of the computer or control meter in the control chamber, which realizes thorough decentralized control.FCS adopts digital signals to replace analog signals so that multiple signals (including multiple operating parameter values, device status and failure information) can be transferred on a pair of cables. Meanwhile, it can give power supply to several devices. No switched block for analog/digital or digital/analog is needed besides fieldbus.(3)Characteristics of FCS●Open System;●Interoperability;● replace ability of devices made by different manufacturers.● Intelligentize and Autonomy;●Field equipment completing basic functions of automatic control.●Decentralized System Structure;●Field Adaptability;●Relatively Strong Interference Killing Feature and Safety●Intelligentized local equipment can save investment and quantity of hardware●Saving installation expenses and cables●Saving daily maintenance expenses●Enhancing accuracy and reliability of system●Enhancing initiativeness of system integration for users(4)Development Background and Trend of Fieldbus Control System,With the rapid development of computer and computer network, FCS has been rapidly developed as the interlinked communication network between the field intelligentdevices in the field of process automation, building and traffic etc. Because FCS meets the needs that industrial control system is developing in the way of decentralization, network and intellectualized, it has become the focus of global industrial automation and been universally concerned by the whole world. FCS has caused great revolutions on the aspects of system structure and function system for the current production of automation instrument, distributing control system and programmable controller. It is predicted that FCS will be the general trends in a very long time in the future fore sure.2 APPLICATION OF RELAYThe product reliability generally refers to the operating reliability. It is defined as: the ability of accomplishing the specified function under prescribed conditions and in prescribed time. It consists of intrinsic reliability and application reliability. The intrinsic reliability is determined by product designing and manufacturing technique, and the application reliability is concerned with the correct application of users and the services provided by the manufacturer before and after selling. When using relay, the user should pay attention to the following items.2.1 Coil applied voltageIt is best to choose the coil applicative voltage according to the rated voltage in design, or choose the voltage according to the temperature rising curve. Using any coil voltage that is less than the rated voltage will affect the operation of the relay. The coil operating voltage refers to the voltage that is applied between the coil terminals. The voltage value between the two terminals must be guaranteed, especially when using enlargement circuit to energize the coil. Whereas, it will also affect the relay characteristics if the applied voltage exceeds the highest rated voltage. Exorbitant voltage will bring exorbitant coil temperature rising, especially in high temperature ambient. Exorbitant temperature rising will damage the insulating material and affect the working safety of relay. For magnetic latching relay, energizing (or return) pulse width should not less than 3 times of the operating (or return) time, otherwise, the relay would be left on the middle-position state. When using solid-state components to energize the coil, the components dielectric strength must be above 80V, and the leakage of current must be as little as possible to ensure the relay to release.Energizing power source: Under 110% of the rated current, the adjusting ratio of the power source is less than 10% (or the output impedance is less than 5% of the coilimpedance), the wave voltage of the DC power source is less than 5%. The AC wave is sine wave; the waviness coefficient is between 0.95~1.25; wave distortion is within ±10%; the frequency change is within±1Hz or ±1% of the specified frequency (choosing the bigger value). The output power should not less than coil power consumption.2.2 Transient suppressionAt the moment when the coil power is stopped, peak-inverse voltage that is more than 30 times of the coil rated voltage is produced on the coil, which is harmful to the electronic circuit. Generally, the peak-inverse voltage is suppressed by transient suppression（cutting-peak）diode or resistance to limit the peak-inverse voltage within 50V. But the diode in parallel connection will delay3~5 times of the release time. If the request of the release time is high, a suitable resistance in series can be putted with and at one end of the diode.The power supply to relays in parallel connection and series connection,When several relays in parallel connection are supplied, the relay that the peak-inverse voltage is higher will release power to the relays that the peak-inverse voltage is lower. The release time of the relay will delay. So the relays in parallel connection should be controlled separately to eliminate mutual influence.The relays with different coil resistance and power can’t be used in series, otherwise, t he relay that the coil current is higher in the series circuit can’t operate reliably. Only the relays of the same specification can be used in series, but the peak-inverse voltage will be increased and the peak-inverse voltage should be suppressed. Resistance in series can be used to bear the part voltage that exceeds the rated voltage of the coil according to the ratio of the divided voltage.2.2.1 Contact loadThe load applied to the contacts should be accordant to the rated load and characteristics of the contacts. A load that is not applied according to the rated value range will cause problem. The relay that is only suitable for DC load can’t be used in AC occasions. The relay that can switch 10A load can’t always reliably operate in low level load (less than 10m A×6A) or in dry circuit occasions. The relay that can switch single-phase AC power source isn’t always suitable to switch two single-phase AC loads that aren’t synchronous; the relay that is only specif ied to switch the load of AC 50Hz（or 60Hz）can’t be used to switch AC load of 400Hz.2.2.2 Parallel and series connection of contactsThe contacts used in parallel connection can’t increase the load current, because the operating times of several sets of contacts are absolutely different; that is to say, there is still only a set of contacts switching the increased load. This would damage or weld the contacts and make the contacts can’t close or open. The parallel connection of the contacts can decrease t he misplay of “break”. But the parallel connection of the contacts would increase the misplay of “freezing”. Because the misplay of “break” is the main pattern of invalidation of contacts, the parallel connection can increase the reliability and can be used on the pivotal part of equipments. But the applied voltage should not exceed the highest operating voltage of the coil and should not less than 90% of the rated voltage, otherwise, the coil life and the applicative reliability would be damaged. The series connection of the contacts can increase the load voltage. The amount of the contact sets is equal to the times that the load voltage can be increased. The series connection of contacts can decrease the misplay of “freezing”, but it would increase the mis play of “break”. Anyway, when using redundant technology to increase the operating reliability of contacts, the characteristics and size and the failure mode of load must be considered.2.2.3 Switching speedThe switching speed should not exceed the reciprocal of 10 times of the sum of operating and release time (times/s), otherwise, the contacts can’t switch on steadily. Magnetic latching should be used under the pulse width specified in the technique criterion, or the coil may be damaged.3 RVT DISTRIBUTING ELECTRICITY INTEGRATE TESTAPPARATUSBasic functionMeasure asupervision:Three mutually electric voltage/electric current/ power factor with a great achievement/ power without a great achievement/electricity with a great achiverment/electricity/homophonic-wave electric voltage/ homophonic-wave electric/ current Day electric voltage/ electric current biggest and minimum value/fire for the failure Electric voltage over top, the limit/ lack mutually of time homophonic-wave analyzes is up to 13 times.The data is stored for 2 months.The data communicateRS232/485 communicating connect，The way in communicating can adopt the spot communicating or the long range communicating.，Possible to settle invoke orthe solid hour invokes, responding to the modification and long ranges control of the parameter.Without power compensationTaking physics measures as the power factor without a great achievement,the power factor with a great achievement and the dull place without power compensation;Y+ the combination method of the △，Y+ the △connects the line method，Y+ △ , Y, the △ connects the line method.Data managementAccording to WINDOW98 operation terrace, data in communication automatically reports born statement, curve and pillar form diagrams.Circulation of the protectionWhen the charged barbed wire net of mutually electric voltage over press, owe to press, and a super limit hour fast cut off in expiation of capacitor，When the charged barbed wire net lacks mutually or super limit in the preface of zero hour fast cut off in expiation of capacitor.screen manifestationChinese operation interface，Adopt 128*64 the back light liquid crystal display.The solid hour shows the charged barbed wire net relevant parameter.view manifestation to place the parameter.现场总线控制系统的技术和应用随着新的科学技术革命的出现，在自动化工业领域中，自动控制技术的发展趋向于数字化和网络互联化。
电子信息工程专业英语翻译清华出版社English for IT and EE-07
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Fixed Service Satellites (FSS) use the C band, and the lower band, portions of the Ku bands. They are normally used for broadcast feeds to and from television networks and local affiliate stations, as well as being used for distance learning by schools and universities, business television, videoconferencing, television, videoconferencing, and general commercial telecommunications.4 FSS satellites are also used to distribute national cable channels to the central control units. 它们通常用于向电视网和加盟地方台 units. 馈送或收集广播节目， 馈送或收集广播节目，也用于中小学 和大学的远程教学、商业电视、 和大学的远程教学、商业电视、视频 会议和一般商用通信。 会议和一般商用通信。
New Words
abbreviate 缩略，简写成 缩略， elliptical orbit 椭圆轨道 submarine 海底的，潜水艇 海底的， analogous 模拟的，类似的 模拟的， constellation 星座图，星罗棋布 星座图， affiliate 会员，分支机构 会员， diameter 直径 headend 数据转发器 transponder 转发器，应答器 转发器， amateur 业余爱好，业余的 业余爱好， geostationary orbit 对地静止轨道 complementary 互补的，补充的 互补的， relay 中继，接力 中继， disturbance 扰动，干扰 扰动， geosynchronous 地球同步的 limelight 众人注目的中心 free-tofree-to-air TV 不加密不收费电视 ambiguous 模糊的，混淆的 模糊的， spacespace-borne repeater 天空转发器 dialup 拨号
电子信息工程专业英语词汇(精华整理版)
transistor n 晶体管diode n 二极管semiconductor n 半导体resistor n 电阻器capacitor n 电容器alternating adj 交互的amplifier n 扩音器，放大器integrated circuit 集成电路linear time invariant systems 线性时不变系统voltage n 电压，伏特数tolerance n 公差；宽容；容忍condenser n 电容器；冷凝器dielectric n 绝缘体；电解质electromagnetic adj 电磁的adj 非传导性的deflection n偏斜；偏转；偏差linear device 线性器件the insulation resistance 绝缘电阻anode n 阳极，正极cathode n 阴极breakdown n 故障；崩溃terminal n 终点站；终端，接线端emitter n 发射器collect v 收集，集聚，集中insulator n 绝缘体，绝热器oscilloscope n 示波镜；示波器gain n 增益，放大倍数forward biased 正向偏置reverse biased 反向偏置P-N junction PN结MOS（metal-oxide semiconductor）金属氧化物半导体enhancement and exhausted 增强型和耗尽型integrated circuits 集成电路analog n 模拟digital adj 数字的，数位的horizontal adj, 水平的，地平线的vertical adj 垂直的，顶点的amplitude n 振幅，广阔，丰富attenuation n衰减；变薄；稀薄化multimeter n 万用表frequency n 频率，周率the cathode-ray tube 阴极射线管dual-trace oscilloscope 双踪示波器signal generating device 信号发生器peak-to-peak output voltage 输出电压峰峰值sine wave 正弦波triangle wave 三角波square wave 方波amplifier 放大器，扩音器oscillator n 振荡器feedback n 反馈，回应phase n 相，阶段，状态filter n 滤波器，过滤器rectifier n整流器；纠正者band-stop filter 带阻滤波器band-pass filter 带通滤波器decimal adj 十进制的，小数的hexadecimal adj/n十六进制的binary adj 二进制的；二元的octal adj 八进制的domain n 域；领域code n代码，密码，编码v编码the Fourier transform 傅里叶变换Fast Fourier Transform 快速傅里叶变换microcontroller n 微处理器；微控制器assembly language instrucions n 汇编语言指令chip n 芯片，碎片modular adj 模块化的；模数的sensor n 传感器plug vt堵，塞，插上n塞子，插头，插销coaxial adj 同轴的，共轴的fiber n 光纤relay contact 继电接触器single instruction programmer 单指令编程器dedicated manufactures programming unit 专供制造厂用的编程单元beam n （光线的）束，柱，梁polarize v（使）偏振，（使）极化Cathode Ray Tube（CRT）阴极射线管neuron n神经元；神经细胞fuzzy adj 模糊的Artificial Intelligence Shell 人工智能外壳程序Expert Systems 专家系统Artificial Intelligence 人工智能Perceptive Systems 感知系统neural network 神经网络fuzzy logic 模糊逻辑intelligent agent 智能代理electromagnetic adj 电磁的coaxial adj 同轴的，共轴的microwave n 微波charge v充电，使充电insulator n 绝缘体，绝缘物nonconductive adj非导体的，绝缘的antenna n天线；触角modeling n建模，造型simulation n 仿真；模拟prototype n 原型array n 排队，编队vector n 向量，矢量wavelet n 微波，小浪sine 正弦cosine 余弦inverse adj倒转的，反转的n反面；相反v倒转high-performance 高精确性，高性能two-dimensional 二维的；缺乏深度的three-dimensional 三维的；立体的；真实的object-oriented programming面向对象的程序设计spectral adj 光谱的attenuation n衰减；变薄；稀释distortion n 失真，扭曲，变形wavelength n 波长refractive adj 折射的ATM 异步传输模式Asynchronous TransferModeADSL非对称用户数字线Asymmetric digitalsubscriber lineVDSL甚高速数字用户线very high data ratedigital subscriber lineHDSL高速数据用户线high rate digitalsubscriber lineFDMA频分多址(Frequency Division MultipleAccess)TDMA时分多址(Time Division Multiple Access)CDMA同步码分多址方式(Code Division MultipleAccess)WCDMA宽带码分多址移动通信系统(WidebandCode Division Multiple Access)TD-SCDMA(Time Division Synchronous CodeDivision Multiple Access)时分同步码分多址SDLC(synchronous data link control)同步数据链路控制HDLC(high-level data link control)高级数据链路控制IP/TCP(internet protocol /transfer ControlProtocol)网络传输控制协议ITU (International Telecommunication Union)国际电信联盟ISO国际标准化组织（InternationalStandardization Organization）；OSI开放式系统互联参考模型（Open SystemInterconnect）GSM全球移动通信系统（Global System forMobile Communications）GPRS通用分组无线业务(General Packet RadioService)FDD(frequency division duplex)频分双工TDD(time division duplex)时分双工VPI虚路径标识符（Virtual Path Identifier）；ISDN（Integrated Services Digital Network）综合业务数字网IDN综合数字网（integrated digital network）HDTV (high definition television)高清晰度电视DCT(Discrete Cosine Transform)离散余弦变换VCI(virtual circuit address)虚通路标识MAN城域网Metropolitan area networksLAN局域网local area networkWAN广域网wide area network同步时分复用STDM Synchronous Time DivisionMultiplexing统计时分复用STDM Statistical Time DivisionMultiplexing单工传输simplex transmission半双工传输half-duplex transmission全双工传输full-duplex transmission交换矩阵Switching Matrix电路交换circuit switching分组交换packet switching报文交换message switching奇偶校验parity checking循环冗余校验CRC Cyclic Redundancy Check虚过滤Virtual filter数字滤波digital filtering伪随机比特Quasi Random Bit带宽分配Bandwidth allocation信源information source信宿destination数字化digitalize数字传输技术Digital transmission technology灰度图像Grey scale images灰度级Grey scale level幅度谱Magnitude spectrum相位谱Phase spectrum频谱frequency spectrum智能设备Smart Device软切换Soft handover硬切换Hard Handover相干检测Coherent detection边缘检测Edge detection冲突检测collision detection业务集合service integration业务分离/综合service separation/ integration网络集合network integration环形网Ring networks令牌环网Token Ring network网络终端Network Terminal用户终端user terminal用户电路line circuit电路利用率channel utilization（通道利用率）相关性coherence相干解调coherent demodulation数字图像压缩digital image compression图像编码image encoding有损/无损压缩lossy/lossless compression解压decompression呼叫控制Call Control误差控制error control存储程序控制stored program control存储转发方式store-and-forward manner语音\视频传输voice\video transmission视频点播video-on-demand(VOD)会议电视Video Conference有线电视cable television量化quantization吞吐量throughput话务量traffic多径分集Multipath diversity多媒体通信MDM Multimedia Communication多址干扰Multiple Access Interference人机交互man machine interface交互式会话Conversational interaction路由算法Routing Algorithm目标识别Object recognition话音变换Voice transform中继线trunk line传输时延transmission delay远程监控remote monitoring光链路optical link拓扑结构Topology均方根root mean squarewhatsoever=whatever 0switchboard (电话)交换台bipolar （电子）双极的premise （复）房屋，前提cursor (计算机尺的)游标，指导的elapse （时间）经过，消失vaporize （使）蒸发subsystem （系统的）分部，子系统，辅助系统metallic （像）金属的，含金属的，（声音）刺耳的dispatch （迅速）派遣，急件consensus （意见）一致，同意deadline （最后）期限，截止时间tomographic X线体层摄像的alas 唉，哎呀cluster 把…集成一束，一组，一簇，一串，一群encyclopedia 百科全书millionfold 百万倍的semiconductor 半导体radius 半径范围，半径，径向射线half-duplex transmission 半双工传输accompaniment 伴随物，附属物reservation 保留，预定quotation 报价单，行情报告，引语memorandum 备忘录redundancy 备用be viewed as 被看作…be regards as 被认为是as such 本身；照此；以这种资格textual 本文的，正文的verge 边界variation 变化，变量conversion 变化，转化identity 标识；标志criterion 标准，准则in parallel on 并联到，合并到juxtapose 并置，并列dialing pulse 拨号脉冲wave-guide 波导wavelength division multiplexed 波分复用baud rate 波特率playback 播放（录音带，唱片）no greater than 不大于update 不断改进，使…适合新的要求，更新asymmetric 不对称的irrespective 不考虑的，不顾的inevitably 不可避免的inevitable 不可避免的，不可逃避的，必定的segment 部分abrasion 擦伤，磨损deploy 采用，利用，推广应用take the form of 采用…的形式parameter 参数，参量layer 层dope 掺杂FET(field effect transistors) 场效应管audio recording 唱片ultra-high-frequency(UHF) 超高频in excess of 超过in excess of 超过hypertext 超文本ingredient 成分，因素ingredient 成分，组成部分，要素metropolitan-area network(WAN) 城域网metropolitan area network(WAN) 城域网，城市网络congestion 充满，拥挤，阻塞collision 冲突extractive 抽出；释放出extract 抽取，取出，分离lease 出租，租约，租界期限，租界物pass on 传递，切换transmission 传输facsimile 传真innovative=innovatory 创新的，富有革新精神的track 磁道impetus 促进，激励cluster 簇stored-program control(SPC) 存储程序控制a large number of 大量的peal 大声响，发出supersede 代替supplant 代替，取代out-of-band signaling 带外信号simplex transmission 单工传输monochromatic 单色的，单色光的，黑白的ballistic 弹道的，射击的，冲击的conductor 导体hierarchy 等级制度，层次infrastructure 底层结构，基础结构geographic 地理的，地区的geographically 地理上GIS(ground instrumentation system) 地面测量系统ground station 地面站earth orbit 地球轨道extraterrestrial 地球外的，地球大气圈外的Land-sat 地球资源卫星rug 地毯，毯子ignite 点火，点燃，使兴奋electromagnetic 电磁的inductive 电感arc 电弧telephony 电话（学），通话dielectric 电介质，绝缘材料；电解质的，绝缘的capacitor 电容telecommunication 电信，无线电通讯scenario 电影剧本，方案modem pool 调制解调器（存储）池superimposing 叠加，重叠pin 钉住，扣住，抓住customize 定做，定制monolithic 独立的，完全统一的aluminize 镀铝strategic 对全局有重要意义的，战略的substantial 多的，大的，实际上的multi-path fading 多径衰落multi-path 多路，多途径；多路的，多途径的multi-access 多路存取，多路进入multiplex 多路复用multiplex 多路复用的degradation 恶化，降级dioxide 二氧化碳LED(light-emitting-diode) 发光二极管evolution 发展，展开，渐进feedback 反馈，回授dimension 范围，方向，维，元scenario 方案scenario 方案，电影剧本amplifer 放大器noninvasive 非侵略的，非侵害的tariff 费率，关税率；对…征税distributed functional plane(DFP) 分布功能平面DQDB(distributed queue dual bus) 分布式队列双总线hierarchy 分层，层次partition 分成segmentation 分割interface 分界面，接口asunder 分开地，分离地detached 分离的，分开的，孤立的dispense 分配allocate 分配，配给；配给物centigrade 分为百度的，百分度的，摄氏温度的fractal 分形molecule 分子，微小，些微cellular 蜂窝状的cellular 蜂窝状的，格形的，多孔的auxiliary storage(also called secondary storage)辅助存储器decay 腐烂，衰减，衰退negative 负电vicinity 附近，邻近vicinity 附近地区，近处sophisticated 复杂的，高级的，现代化的high-frequency(HF) 高频high definition television 高清晰度电视chromium 铬annotate 给…作注解in terms of 根据，按照disclosure 公布，企业决算公开public network 公用网functionality 功能，功能度mercury 汞resonator 共鸣器resonance 共振whimsical 古怪的，反复无常的administration 管理，经营cursor 光标（显示器），游标，指针optical computer 光计算机photoconductor 光敏电阻optical disks 光盘optically 光学地，光地wide-area networks 广域网specification 规范，说明书silicon 硅the international telecommunication union(ITU)国际电信联盟excess 过剩obsolete 过时的，废弃的maritime 海事的synthetic 合成的，人造的，综合的synthetic 合成的，综合性的rational 合乎理性的rationalization 合理化streamline 合理化，理顺infrared 红外线的，红外线skepticism 怀疑论ring network 环形网hybrid 混合物counterpart 伙伴，副本，对应物electromechanical 机电的，电动机械的Robot 机器人Robotics 机器人技术，机器人学accumulation 积累infrastructure 基础，基础结构substrate 基质，底质upheaval 激变，剧变compact disc 激光磁盘（CD）concentrator 集中器，集线器centrex system 集中式用户交换功能系统converge on 集中于，聚集在…上lumped element 集总元件CAI(computer-aided instruction) 计算机辅助教学computer-integrated manufacturing(CIM) 计算机集成制造computer mediated communication(CMC) 计算机中介通信record 记录register 记录器，寄存器expedite 加快，促进weight 加权accelerate 加速，加快，促进categorize 加以类别，分类in addition 加之，又，另外hypothetical 假设的rigidly 坚硬的，僵硬的compatibility 兼容性，相容性surveillance 监视surveillance 监视retrieval 检索，（可）补救verification 检验simplicity 简单，简明film 胶片，薄膜take over 接管，接任ruggedness 结实threshold 界限，临界值with the aid of 借助于，用，通过wire line 金属线路，有线线路coherent 紧凑的，表达清楚的，粘附的，相干的compact 紧密的approximation 近似undertake 进行，从事transistor 晶体管elaborate 精心制作的，细心完成的，周密安排的vigilant 警戒的，警惕的alcohol 酒精，酒local area networks(LANs) 局域网local-area networks(LANs) 局域网drama 剧本，戏剧，戏剧的演出focus on 聚集在，集中于，注视insulator 绝缘root mean square 均方根uniform 均匀的open-system-interconnection(OSI) 开放系统互连expire 开始无效，满期，终止immunity 抗扰，免除，免疫性take…into account 考虑，重视…programmable industrial automation 可编程工业自动化demountable 可拆卸的tunable 可调的reliable 可靠be likely to 可能，大约，像要videotex video 可视图文电视negligible 可以忽略的aerial 空气的，空中的，无形的，虚幻的；天线broadband 宽（频）带pervasive 扩大的，渗透的tensile 拉力的，张力的romanticism 浪漫精神，浪漫主义discrete 离散，不连续ion 离子force 力量；力stereophonic 立体声的continuum 连续统一体，连续统，闭联集smart 灵巧的；精明的；洒脱的token 令牌on the other hand 另一方面hexagonal 六边形的，六角形的hexagon 六角形，六边形monopoly 垄断，专利video-clip 录像剪辑aluminum 铝pebble 卵石，水晶透镜forum 论坛，讨论会logical relationships 逻辑关系code book 码本pulse code modulation(PCM) 脉冲编码调制roam 漫步，漫游bps(bits per second) 每秒钟传输的比特ZIP codes 美国邮区划分的五位编码susceptible(to) 敏感的，易受…的analog 模拟，模拟量pattern recognition模式识别bibliographic 目录的，文献的neodymium 钕the european telecommunicationstandardization institute(ETSI) 欧洲电信标准局coordinate 配合的，协调的；使配合，调整ratify 批准，认可bias 偏差；偏置deviate 偏离，与…不同spectrum 频谱come into play 其作用entrepreneurial 企业的heuristic methods 启发式方法play a …role(part) 起…作用stem from 起源于；由…发生organic 器官的，有机的，组织的hypothesis 前提front-end 前置，前级potential 潜势的，潜力的intensity 强度coincidence 巧合，吻合，一致scalpel 轻便小刀，解剖刀inventory 清单，报表spherical 球的，球形的distinguish 区别，辨别succumb 屈服，屈从，死global functional plane(GFP) 全局功能平面full-duplex transmission 全双工传输hologram 全息照相，全息图deficiency 缺乏thermonuclear 热核的artifact 人工制品AI(artificial intelligence) 人工智能fusion 熔解，熔化diskettes(also called floppy disk) 软盘sector 扇区entropy 熵uplink 上行链路arsenic 砷neural network 神经网络very-high-frequency(VHF) 甚高频upgrade 升级distortion 失真，畸变identification 识别，鉴定，验明pragmatic 实际的implementation 实施，实现，执行，敷设entity 实体，存在vector quantification 矢量量化mislead 使…误解，给…错误印象，引错vex 使烦恼，使恼火defy 使落空facilitate 使容易，促进retina 视网膜compatible 适合的，兼容的transceiver 收发两用机authorize 授权，委托，允许data security 数据安全性data independence 数据独立data management 数据管理database 数据库database management system(DBMS) 数据库管理信息系统database transaction 数据库事务data integrity 数据完整性，数据一致性attenuation 衰减fading 衰落，衰减，消失dual 双的，二重的transient 瞬时的deterministic 宿命的，确定的algorithm 算法dissipation 损耗carbon 碳diabetes 糖尿病cumbersome 讨厌的，麻烦的，笨重的razor 剃刀，剃go by the name of 通称，普通叫做commucation session 通信会话traffic 通信业务（量）synchronous transmission 同步传输concurrent 同时发生的，共存的simultaneous 同时发生的，同时做的simultaneous 同时发生的，一齐的coaxial 同轴的copper 铜statistical 统计的，统计学的dominate 统治，支配invest in 投资perspective 透视，角度，远景graphics 图示，图解pictorial 图像的coating 涂层，层deduce 推理reasoning strategies 推理策略inference engine 推理机topology 拓扑结构heterodyne 外差法的peripheral 外界的，外部的，周围的gateway 网关hazardous 危险的microwave 微波（的）microprocessor 微处理机，微处理器microelectronic 微电子nuance 微小的差别（色彩等）encompass 围绕，包围，造成，设法做到maintenance 维护；保持；维修satellite communication 卫星通信satellite network 卫星网络transceiver 无线电收发信机radio-relay transmission 无线电中继传输without any doubt 无疑passive satellite 无源卫星sparse 稀少的，稀疏的downlink 下行链路precursor 先驱，前任visualization 显像feasibility 现实性，可行性linearity 线性度constrain 限制，约束，制约considerable 相当的，重要的geo-stationary 相对地面静止by contrast 相反，而，对比起来coorelation 相关性mutual 相互的mutually 相互的，共同的interconnect 相互连接，互连one after the other 相继，依次minicomputer 小型计算机protocol 协议，草案protocol 协议，规约，规程psycho-acoustic 心理（精神）听觉的；传音的channelization 信道化，通信信道选择run length encoding 行程编码groom 修饰，准备virtual ISDN 虚拟ISDNmultitude 许多，大批，大量whirl 旋转preference 选择，喜欢avalanche 雪崩pursue 寻求，从事interrogation 询问dumb 哑的，不说话的，无声的subcategory 亚类，子种类，子范畴orbital 眼眶；轨道oxygen 氧气，氧元素service switching and control points(SSCPs) 业务交换控制点service control points(SCPs) 业务控制点service control function(SCF) 业务控制功能in concert 一致，一齐handover 移交，越区切换at a rate of 以……的速率in the form of 以…的形式base on…以…为基础yttrium 钇（稀有金属，符号Y）asynchronous transmission 异步传输asynchronous 异步的exceptional 异常的，特殊的voice-grade 音频级indium 铟give rise to 引起，使产生cryptic 隐义的，秘密的hard disk 硬盘hard automation 硬自动化by means of 用，依靠equip with 用…装备subscriber 用户telex 用户电报PBX(private branch exchange) 用户小交换机或专用交换机be called upon to 用来…，（被）要求…superiority 优势predominance 优势，显著active satellite 有源卫星in comparison with 与…比较comparable to 与…可比preliminary 预备的，初步的premonition 预感，预兆nucleus 原子核valence 原子价circumference 圆周，周围teleprocessing 远程信息处理，遥控处理perspective 远景，前途constrain 约束，强迫mobile 运动的，流动的，机动的，装在车上的convey 运输，传递，转换impurity 杂质impurity 杂质，混杂物，不洁，不纯regenerative 再生的improve over 在……基础上改善play important role in 在…中起重要作用in close proximity 在附近，在很近underlying 在下的，基础的in this respect 在这方面entail 遭遇，导致presentation 赠与，图像，呈现，演示narrowband 窄（频）带deploy 展开，使用，推广应用megabit 兆比特germanium 锗positive 正电quadrature 正交orthogonal 正交的quadrature amplitude modulation(QAM) 正交幅度调制on the right track 正在轨道上sustain 支撑，撑住，维持，持续outgrowh 支派；长出；副产品dominate 支配，统治knowledge representation 知识表示knowledge engineering 知识工程knowledge base 知识库in diameter 直径helicopter 直升飞机acronym 只取首字母的缩写词as long as 只要，如果tutorial 指导教师的，指导的coin 制造（新字符），杜撰fabrication 制造，装配；捏造事实proton 质子intelligence 智能，智力，信息intelligent network 智能网intermediate 中间的nucleus(pl.nuclei) 中心，核心neutrons 中子terminal 终端，终端设备overlay 重叠，覆盖，涂覆highlight 重要的部分，焦点charge 主管，看管；承载dominant 主要的，控制的，最有力的cylinder 柱面expert system 专家系统private network 专用网络transition 转变，转换，跃迁relay 转播relay 转播，中继repeater 转发器，中继器pursue 追赶，追踪，追求，继续desktop publish 桌面出版ultraviolet 紫外线的，紫外的；紫外线辐射field 字段vendor 自动售货机，厂商naturally 自然的；天生具备的synthesize 综合，合成integrate 综合，使完全ISDN(intergrated services digital network) 综合业务数字网as a whole 总体上bus network 总线形网crossbar 纵横，交叉impedance 阻抗initial 最初的，开始的optimum 最佳条件appear as 作为…出现A Analog 模拟A/D Analog to Digital 模-数转换AAC Advanced Audio Coding 高级音频编码ABB Automatic Black Balance 自动黑平衡ABC American Broadcasting Company 美国广播公司Automatic Bass Compensation 自动低音补偿Automatic Brightness Control 自动亮度控制ABL Automatic Black Level 自动黑电平ABLC Automatic Brightness LimiterCircuit 自动亮度限制电路ABU Asian Broadcasting Union 亚洲广播联盟(亚广联ABS American Bureau of Standard 美国标准局AC Access Conditions 接入条件Audio Center 音频中心ACA Adjacent Channel Attenuation 邻频道衰减ACC Automatic Centering Control 自动中心控制Automatic Chroma Control 自动色度(增益ACK Automatic Chroma Killer 自动消色器ACP Additive Colour Process 加色法ACS Access Control System 接入控制系统Advanced Communication Service 高级通信业务Area Communication System 区域通信系统ADC Analog to Digital Converter 模-数转换器Automatic Degaussirng Circuit 自动消磁电路ADL Acoustic Delay Line 声延迟线ADS Audio Distribution System 音频分配系统AE Audio Erasing 音频（声音AEF Automatic Editing Function 自动编辑功能AES Audio Engineering Society 音频工程协会AF Audio Frequency 音频AFA Audio Frequency Amplifier 音频放大器AFC Automatic Frequency Coder 音频编码器Automatic Frequency Control 自动频率控制AFT Automatic Fine Tuning 自动微调Automatic Frequency Track 自动频率跟踪Automatic Frequency Trim 自动额率微调AGC Automatic Gain Control 自动增益控制AI Artificial Intelligence 人工智能ALM Audio-Level Meter 音频电平表AM Amplitude Modulation 调幅AMS Automatic Music Sensor 自动音乐传感装置ANC Automatic Noise Canceller 自动噪声消除器ANT ANTenna 天线AO Analog Output 模拟输出APS Automatic Program Search 自动节目搜索APPS Automatic Program Pause System自动节目暂停系统APSS Automatic Program Search System自动节目搜索系统AR Audio Response 音频响应ARC Automatic Remote Control 自动遥控ASCII American Standard Code forInformation Interchange 美国信息交换标准AST Automatic Scanning Tracking 自动扫描跟踪ATC Automatic Timing Control 自动定时控制Automatic Tone Correction 自动音频校正ATM Asynchronous Transfer Mode 异步传输模式ATF Automatic Track Finding 自动寻迹ATS Automatic Test System 自动测试系统ATSC Advanced Television SystemsCommittee （美国高级电视制式委员会）***C Automatic Volume Control 自动音量控制***R Automatic Voltage Regulator 自动稳压器AWB Automatic White Balance 自动白平衡AZC Automatic Zooming Control 自动变焦控制AZS Automatic Zero Setting 自动调零BA Branch Amplifier 分支放大器Buffer Amplifier 缓冲放大器BAC Binary-Analog Conversion 二进制模拟转换BB Black Burst 黑场信号BBC British Broadcasting Corporation 英国广播公司BBI Beijing Broadcasting Institute 北京广播学院BC Binary Code 二进制码Balanced Current 平衡电流Broadcast Control 广播控制BCT Bandwidth Compression Technique 带宽压缩技术BDB Bi-directional Data Bus 双向数据总线BER Basic Encoding Rules 基本编码规则Bit Error Rate 比特误码率BF Burst Flag 色同步旗脉冲BFA Bare Fiber Adapter 裸光纤适配器Brillouin Fiber Amplifier 布里渊光纤放大器BGM Background Music 背景音乐BIOS Basic Input／Output System 基本输入输出系统B-ISDN Broadband-ISDN 宽带综合业务数据网BIU Basic Information Unit 基本信息单元Bus Interface Unit 总线接口单元BM Bi-phase Modulation 双相调制BML Business Management Layer 商务管理层BN Backbone Network 主干网BNT Broadband Network Termination 宽带网络终端设备BO Bus Out 总线输出BPG Basic Pulse Generator 基准脉冲发生器BPS Band Pitch Shift 分频段变调节器BSI British Standard Institute 英国标准学会BSS Broadcast Satellite Service 广播卫星业务BT Block Terminal 分线盒、分组终端British Telecom 英国电信BTA Broadband Terminal Adapter 宽带终端适配器Broadcasting Technology Association (日本BTL Balanced Transformer-Less 桥式推挽放大电路BTS Broadcast Technical Standard 广播技术标准BTU Basic Transmission Unit 基本传输单元BVU Broadcasting Video Unit 广播视频型(一种3/4英寸带录像机记录格式BW BandWidth 带宽BWTV Black and White Television 黑白电视CA Conditional Access 条件接收CAC Conditional Access Control 条件接收控制CAL Continuity Accept Limit 连续性接受极限CAS Conditional Access System 条件接收系统Conditional Access Sub-system 条件接收子系统CATV Cable Television 有线电视，电缆电视Community Antenna Television 共用天线电视C*** Constant Angular Velocity 恒角速度CBC Canadian Broadcasting Corporation 加拿大广播公司CBS Columbia Broadcasting System （美国哥伦比亚广播公司CC Concentric Cable 同轴电缆CCG Chinese Character Generator 中文字幕发生器CCIR International Radio Consultative Committee 国际无线电咨询委员会CCITT International Telegraph andTelephone ConsultativeCommittee 国际电话电报咨询委员会CCR Central Control Room 中心控制室CCTV China Central Television 中国中央电视台Close-Circuit Television 闭路电视CCS Center Central System 中心控制系统CCU Camera Control Unit 摄像机控制器CCW Counter Clock-Wise 反时针方向CD Compact Disc 激光唱片CDA Current Dumping Amplifier 电流放大器CD-E Compact Disc Erasable 可抹式激光唱片CDFM Compact Disc 光盘文件管理(程序CDPG Compact-Disc Plus Graphic 带有静止图像的CD唱盘CD-ROM Compact Disc-Read OnlyMemory 只读式紧凑光盘CETV China Educational Television 中国教育电视台CF Color Framing 彩色成帧CGA Color Graphics Adapter 彩色图形(显示卡CI Common Interface 通用接口CGA Color Graphics Adapter 彩色图形(显示卡CI Common Interface 通用接口CIE Chinese Institute of Electronics 中国电子学会CII China Information Infrastructure 中国信息基础设施CIF Common Intermediate Format 通用中间格式CIS Chinese Industrial Standard 中国工业标准CLV Constant Linear Velocity 恒定线速度CM Colour Monitor 彩色监视器CMTS Cable Modem Termination System线缆调制解调器终端系统CNR Carrier-to-Noise Ratio 载噪比CON Console 操纵台Controller 控制器CPB Corporation of Public Broadcasting（美国公共广播公司CPU Central Processing Unit 中央处理单元CRC Cyclic Redundancy Check 循环冗余校验CRCC CRI Cyclic Redundancy Check Code循环冗余校验码CROM China Radio International 中国国际广播电台CRT Control Read Only Memory 控制只读存储器CS Cathode-Ray Tube 阴极射线管CSC Communication Satellite 通信卫星CSS Color Sub-carrier 彩色副载波Center Storage Server 中央存储服务器Content Scrambling System 内容加扰系统CSU Channel Service Unit 信道业务单元CT Color Temperature 色温CTC Cassette Tape Controller 盒式磁带控制器Channel Traffic Control 通道通信量控制Counter Timer Circuit 计数器定时器电路Counter Timer Control 计数器定时器控制CTE Cable Termination Equipment 线缆终端设备Customer Terminal Equipment 用户终端设备CTV Color Television 彩色电视CVD China Video Disc 中国数字视盘CW Carrie Wave 载波DAB Digital Audio Broadcasting 数字音频广播DASH Digital Audio Stationary Head 数字音频静止磁头DAT Digital Audio Tape 数字音频磁带DBMS Data Base Management System 数据库管理系统DBS Direct Broadcast Satellite 直播卫星DCC Digital Compact Cassette 数字小型盒带Dynamic Contrast Control 动态对比度控制DCT Digital Component Technology 数字分量技术Discrete Cosine Transform 离散余弦变换DCTV Digital Color Television 数字彩色电视DD Direct Drive 直接驱动DDC Direct Digital Control 直接数字控制DDE Dynamic Data Exchange 动态数据交换DDM Data Display Monitor 数据显示监视器DES Data Elementary Stream 数据基本码流Data Encryption Standard 美国数据加密标准DF Dispersion Flattened 色散平坦光纤DG Differential Gain 微分增益DI Digital Interface 数字接口DITEC Digital Television Camera 数字电视摄像机DL Delay Line 延时线DLD Dynamic Linear Drive 动态线性驱动DM Delta Modulation 增量调制Digital Modulation 数字调制DMB Digital Multimedia Broadcasting 数字多媒体广播DMC Dynamic Motion Control 动态控制DME Digital Multiple Effect 数字多功能特技DMS Digital Mastering System 数字主系统DN Data Network 数据网络DNG Digital News Gathering 数字新闻采集DNR Digital Noise Reducer 数字式降噪器DOB Data Output Bus 数据输出总线DOCSIS Data Over Cable ServiceInterface Specifications 有线数据传输业务接口规范DOC Drop Out Compensation 失落补偿DOS Disc Operating System 磁盘操作系统DP Differential Phase 微分相位Data Pulse 数据脉冲DPCM Differential Pulse Code Modulation差值脉冲编码调制DPL Dolby Pro Logic 杜比定向逻辑DSB Digital Satellite Broadcasting 数字卫星广播DSC Digital Studio Control 数字演播室控制DSD Dolby Surround Digital 杜比数字环绕声DSE Digital Special Effect 数字特技DSK Down-Stream Key 下游键DSP Digital Signal Processing 数字信号处理Digital Sound Processor 数字声音处理器DSS Digital Satellite System 数字卫星系统DT Digital Technique 数字技术Digital Television 数字电视Data Terminal 数据终端Data Transmission 数据传输DTB Digital Terrestrial Broadcasting 数字地面广播DTBC Digital Time-Base Corrector 数字时基校正器DTC Digital Television Camera 数字电视摄像机DTS Digital Theater System 数字影院系统Digital Tuning System 数字调谐系统Digital Television Standard 数字电视标准DVB Digital Video Broadcasting 数字视频广播DVC Digital Video Compression 数字视频压缩DVE Digital Video Effect 数字视频特技DVS Desktop Video Studio 桌上视频演播DVTR Digital Video Tape Recorder 数字磁带录像机EA Extension Amplifier 延长放大器EB Electron Beam 电子束EBS Emergency Broadcasting System 紧急广播系统EBU European Broadcasting Union 欧洲广播联盟EC Error Correction 误差校正ECN Emergency Communications Network 应急通信网络ECS European Communication Satellite 欧洲通信卫星EDC Error Detection Code 错误检测码EDE Electronic Data Exchange 电子数据交换EDF Erbium-Doped Fiber 掺饵光纤EDFA Erbium-Doped Fiber Amplifier 掺饵光纤放大器EDL Edit Decision List 编辑点清单EDTV Extended Definition Television 扩展清晰度电视EE Error Excepted 允许误差EFM Eight to Fourteen Modulation 8-14调制EFP Electronic Field Production 电子现场节目制作EH Ethernet Hosts 以太网主机EIN Equivalent Input Noise 等效输入噪声EIS Electronic Information System 电子信息系统EISA Extended Industrial Standard Architecture 扩展工业标准总线EL Electro-Luminescent 场致发光EM Error Monitoring 误码监测EN End Node 末端节点ENG Electronic News Gathering 电子新闻采集EOT End of Tape 带尾EP Edit Point 编辑点Error Protocol 错误协议EPG Electronic Program Guides 电子节目指南EPS Emergency Power Supply 应急电源ERP Effective Radiated Power 有效辐射功率ES Elementary Stream 基本码流End System 终端系统ESA European Space Agency 欧洲空间局ETV Education Television 教育电视FA Enhanced Television 增强电视FABM FAS Facial Animation 面部动画FC Fiber Amplifier Booster Module 光纤放大器增强模块Fiber Access System 光纤接入系统Frequency Changer 变频器FCC Fiber Channel 光纤通道FD Film Composer 电影编辑系统Federal Communications Commission 美国联邦通信委员会FDCT Frequency Divider 分频器FDDI FDM Fiber Duct 光纤管道FDP Forward Discrete Cosine Transform 离散余弦正变换FE Fiber Distributed Data Interface 分布式光纤数据接口Frequency-Division Multiplexing 频分复用FF Fiber Distribution Point 光纤分配点FG Front End 前端FH Framing Error 成帧误差FIT Fast Forward 快进FN Frequency Generator 频率发生器FOA Frequency Hopping 跳频FOC Frame-Interline Transfer 帧一行间转移Fiber Node 光纤节点Fiber Optic Amplifier 光纤放大器FOM Fiber Optic Cable 光缆FON Fiber Optic Communications 光纤通信FOS Fiber Optic Coupler 光纤耦合器FOTC Fiber Optic Modem 光纤调制解调器FS Fiber Optic Net 光纤网Factor of Safety 安全系数Fiber Optic Trunk Cable 光缆干线FT Frame Scan 帧扫描Store 帧存储器FTTB Frame Synchro 帧同步机FTTC France Telecom 法国电信Absorber Circuit 吸收电路AC/AC Frequency Converter 交交变频电路AC power control交流电力控制AC Power Controller交流调功电路AC Power Electronic Switch交流电力电子开关Ac Voltage Controller交流调压电路Asynchronous Modulation异步调制Baker Clamping Circuit贝克箝位电路Bi-directional Triode Thyristor双向晶闸管Bipolar Junction Transistor-- BJT双极结型晶体管Boost-Buck Chopper升降压斩波电路Boost Chopper升压斩波电路Boost Converter升压变换器Bridge Reversible Chopper桥式可逆斩波电路Buck Chopper降压斩波电路Buck Converter降压变换器Commutation换流Conduction Angle导通角Constant Voltage Constant Frequency --CVCF恒压恒频Continuous Conduction--CCM（电流）连续模式Control Circuit 控制电路Cuk Circuit CUK 斩波电路Current Reversible Chopper电流可逆斩波电路Current Source Type Inverter--CSTI 电流（源）型逆变电路Cyclo convertor周波变流器DC-AC-DC Converter直交直电路DC Chopping直流斩波DC Chopping Circuit直流斩波电路DC-DC Converter直流－直流变换器Device Commutation器件换流Direct Current Control直接电流控制Discontinuous Conduction mode （电流）断续模式displacement factor 位移因数distortion power 畸变功率double end converter 双端电路driving circuit 驱动电路electrical isolation 电气隔离fast acting fuse 快速熔断器fast recovery diode快恢复二极管fast revcovery epitaxial diodes 快恢复外延二极管fast switching thyristor快速晶闸管field controlled thyristor场控晶闸管flyback converter 反激电流forced commutation 强迫换流forward converter 正激电路frequency converter 变频器full bridge converter全桥电路full bridge rectifier 全桥整流电路full wave rectifier 全波整流电路fundamental factor基波因数gate turn-off thyristor——GTO 可关断晶闸管general purpose diode 普通二极管giant transistor——GTR 电力晶体管half bridge converter 半桥电路hard switching 硬开关high voltage IC 高压集成电路hysteresis comparison 带环比较方式indirect current control间接电流控制indirect DC-DC converter直接电流变换电路insulated-gate bipolar transistor---IGBT绝缘栅双极晶体管intelligent power module---IPM智能功率模块integrated gate-commutated thyristor---IGCT集成门极换流晶闸管inversion 逆变latching effect 擎住效应leakage inductance 漏感light triggered thyristor---LTT光控晶闸管line commutation 电网换流load commutation 负载换流loop current 环流1 backplane 背板2 Band gap voltage reference 带隙电压参考3 bench top supply 工作台电源4 Block Diagram 方块图5 Bode Plot 波特图6 Bootstrap 自举7 Bottom FET Bottom FET8 bucket capacitor 桶形电容9 chassis 机架11 constant current source 恒流源12 Core Saturation 铁芯饱和13 crossover frequency 交叉频率14 current ripple 纹波电流15 Cycle by Cycle 逐周期16 cycle skipping 周期跳步17 Dead Time 死区时间18 DIE Temperature 核心温度19 Disable 非使能，无效，禁用，关断20 dominant pole 主极点21 Enable 使能，有效，启用22 ESD Rating ESD额定值23 Evaluation Board 评估板24 Exceeding the specifications below mayresult in permanent damage to the device, ordevice malfunction. Operation outside of theparameters specified in the ElectricalCharacteristics section is not implied. 超过下面的规格使用可能引起永久的设备损害或设备故障。
电子信息工程专业英语翻译清华出版社English for IT and EE-10
如果信号是立体声的，内存就 如果信号是立体声的， 乘以二， 乘以二，因为立体声实际上用 了两个信号
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This equation can be used to demonstrate why transmitting highhigh-quality audio across the Internet requires compression. CD audio uses 16-bit stereo sampled at 44,100 Hz. This means 16that one minute of CD audio uses 44,100×16×60×2 = 44,100×16×60× 84,672,000 bits, or slightly over 10 megabytes.
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This replaces all bitcodes with unique bitcodes of varying length according to the frequency of the pattern occurrence.4 For instance, the most commonly occurred bit pattern would be encoded as ‘01’, while the next common would be ‘010’ and the next would be ‘011’, and so on.
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A standard 56 kbps modem would take 84,672,000/57344 = 1477 seconds or about 25 minutes! 25 minutes is a long time to wait for one minute of audio, so an alternative is imperative. imperative. That alternative was MPEG Audio Layer 3, or MP3.
English for IT and EE-09
3
When flexibility and rapid development are more important
than unit costs at high volume, DSP algorithms may also be
implemented using field-programmable gate arrays (FPGAs).2
bandwidth scenarios are: DC~BW (“baseband”); and fcBW,
a frequency band centered on a carrier frequency (“direct demodulation”). 采样频率通常远大于信号 带宽的两倍
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scenario情节，方案 ingredient 成分，因素
enhancement 增强 weighted 加权的 superposition 叠加 converge 收敛 bounded 有界的
transfer functions 传递函数 derive 推导
cepstrum 倒谱
block diagram 方框图 magnitude 大小
biomedical 生物特征的
abbreviate 缩写，缩略 application-specific 面向应用的 autocorrelation 自相关 baseband 基带
informed 有知识的，有见闻的
cross-correlation 互相关
spatial domain 空间域
interval 间隔
用有限集中的值来近似代表 性的信号值
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In order for a sampled analog signal to be exactly
电子信息工程专业英语词汇.doc
电子信息工程专业英语词汇transistor n 晶体管 plug vt堵，塞，插上n塞子，插头，插销 OSI开放式系统互联参考模型(Open System diode n 二极管 coaxial adj 同轴的，共轴的Interconnect) semiconductor n 半导体 fiber n 光纤 GSM全球移动通信系统(Global System forresistor n 电阻器 relay contact 继电接触器 Mobile Communications) capacitor n 电容器 single instruction programmer 单指令编程器 GPRS通用分组无线业务(General Packet Radio dedicated manufactures programmingunit 专 alternating adj 交互的 Service)amplifier n 扩音器，放大器供制造厂用的编程单元 FDD(frequencydivision duplex)频分双工 integrated circuit 集成电路 beam n (光线的)束，柱，梁 TDD(time division duplex)时分双工 polarize v(使)偏振，(使)极化linear time invariant systems 线性时不变系统 VPI虚路径标识符(Virtual Path Identifier); voltage n 电压，伏特数 Cathode Ray Tube(CRT) 阴极射线管 ISDN(Integrated Services Digital Network)综 tolerance n 公差;宽容;容忍 neuron n神经元;神经细胞合业务数字网 fuzzy adj 模糊的 condenser n 电容器;冷凝器 IDN综合数字网(integrated digital network)dielectric n 绝缘体;电解质 Artificial Intelligence Shell 人工智能外壳程序 HDTV (high definition television)高清晰度电视 electromagnetic adj 电磁的 Expert Systems 专家系统 DCT(Discrete Cosine Transform)离散余弦变换 Artificial Intelligence 人工智能 adj 非传导性的 VCI(virtual circuit address)虚通路标识 deflection n偏斜;偏转;偏差 Perceptive Systems 感知系统 MAN城域网Metropolitan area networks linear device 线性器件 neural network 神经网络 LAN局域网local area networkthe insulation resistance 绝缘电阻 fuzzy logic 模糊逻辑 WAN广域网wide area network anode n 阳极，正极 intelligent agent 智能代理同步时分复用STDM Synchronous Time Division cathode n 阴极 electromagnetic adj 电磁的 Multiplexing breakdown n 故障;崩溃 coaxial adj 同轴的，共轴的统计时分复用STDM Statistical Time Divisionterminal n 终点站;终端，接线端 microwave n 微波 Multiplexing emitter n 发射器 charge v充电，使充电单工传输simplex transmission collect v 收集，集聚，集中 insulator n 绝缘体，绝缘物半双工传输half-duplex transmission insulator n 绝缘体，绝热器 nonconductive adj非导体的，绝缘的全双工传输full-duplex transmission oscilloscope n 示波镜;示波器antenna n天线;触角交换矩阵Switching Matrix gain n 增益，放大倍数modeling n建模，造型电路交换 circuit switchingforward biased 正向偏置 simulation n 仿真;模拟分组交换packet switching reverse biased 反向偏置 prototype n 原型报文交换message switching P-N junction PN结 array n 排队，编队奇偶校验parity checking MOS(metal-oxide semiconductor) 金属vector n 向量，矢量循环冗余校验CRC Cyclic Redundancy Check 氧化物半导体 wavelet n 微波，小浪虚过滤Virtual filter enhancement and exhausted 增强型和耗sine 正弦 cosine 余弦数字滤波digital filtering 尽型 inverse adj倒转的，反转的n反面;相反v伪随机比特Quasi Random Bit integrated circuits 集成电路倒转带宽分配 Bandwidth allocation analog n 模拟 high-performance 高精确性，高性能信源information sourcedigital adj 数字的，数位的 two-dimensional 二维的;缺乏深度的信宿destination horizontal adj, 水平的，地平线的 three-dimensional 三维的;立体的;真实的数字化digitalize vertical adj 垂直的，顶点的 object-oriented programming面向对象的程序数字传输技术Digital transmission technology amplitude n 振幅，广阔，丰富设计灰度图像Grey scale images attenuation n衰减;变薄;稀薄化 spectral adj 光谱的灰度级Grey scale level multimeter n 万用表 attenuation n衰减;变薄;稀释幅度谱Magnitude spectrumfrequency n 频率，周率 distortion n 失真，扭曲，变形相位谱Phase spectrum the cathode-ray tube 阴极射线管 wavelength n 波长频谱frequency spectrum dual-trace oscilloscope 双踪示波器 refractive adj 折射的智能设备Smart Device signal generating device 信号发生器 ATM 异步传输模式Asynchronous Transfer 软切换Soft handover peak-to-peak output voltage 输出电压峰峰值 Mode 硬切换 Hard Handover sine wave 正弦波 ADSL 非对称用户数字线Asymmetric digital 相干检测Coherent detection triangle wave 三角波 subscriber line 边缘检测Edge detection square wave 方波 VDSL甚高速数字用户线very high data rate 冲突检测collision detection amplifier 放大器，扩音器 digital subscriber line 业务集合service integration oscillator n 振荡器 HDSL高速数据用户线 high rate digital 业务分离/综合service separation/ integration feedback n 反馈，回应 subscriber line 网络集合network integration phase n 相，阶段，状态FDMA频分多址(Frequency Division Multiple 环形网Ring networks filter n 滤波器，过滤器 Access) 令牌环网Token Ring network rectifier n整流器;纠正者 TDMA时分多址(Time Division Multiple Access) 网络终端NetworkTerminal band-stop filter 带阻滤波器 CDMA同步码分多址方式(Code Division Multiple 用户终端user terminalband-pass filter 带通滤波器 Access) 用户电路line circuit decimal adj 十进制的，小数的 WCDMA宽带码分多址移动通信系统(Wideband 电路利用率channel utilization(通道利用率) hexadecimal adj/n十六进制的 Code Division Multiple Access) 相关性coherence binary adj 二进制的;二元的TD-SCDMA(Time Division Synchronous Code 相干解调coherent demodulation octal adj 八进制的 Division Multiple Access)时分同步码分多址数字图像压缩digital image compression domain n 域;领域 SDLC(synchronous data link control)同步数据图像编码image encoding code n代码，密码，编码v编码链路控制有损/无损压缩lossy/lossless compression the Fourier transform 傅里叶变换 HDLC(high-level data link control)高级数据链路解压decompression Fast Fourier Transform 快速傅里叶变换控制呼叫控制Call Control microcontroller n 微处理器;微控制器 IP/TCP(internet protocol/transfer Control 误差控制error control assembly language instrucions n 汇编语Protocol)网络传输控制协议存储程序控制stored program control 言指令 ITU (International Telecommunication Union)存储转发方式store-and-forward manner chip n 芯片，碎片国际电信联盟语音\视频传输voice\video transmission modular adj 模块化的;模数的 ISO国际标准化组织(International 视频点播video-on-demand(VOD) sensor n 传感器Standardization Organization); 会议电视Video Conference有线电视cable television deploy 采用，利用，推广应用 multiplex 多路复用的量化quantization take the form of 采用…的形式 degradation 恶化，降级吞吐量throughput parameter 参数，参量 dioxide 二氧化碳话务量traffic layer 层 LED(light-emitting-diode) 发光二极管多径分集Multipath diversity dope 掺杂 evolution 发展，展开，渐进 FET(field effect transistors) 场效应管多媒体通信MDM Multimedia Communication feedback 反馈，回授多址干扰Multiple Access Interference audio recording 唱片dimension 范围，方向，维，元人机交互man machine interface ultra-high-frequency(UHF) 超高频 scenario 方案 in excess of 超过交互式会话Conversational interaction scenario 方案，电影剧本路由算法Routing Algorithm in excess of 超过 amplifer 放大器目标识别Object recognition hypertext 超文本 noninvasive 非侵略的，非侵害的话音变换Voice transform ingredient 成分，因素 tariff 费率，关税率;对…征税中继线trunk line ingredient 成分，组成部分，要素 distributed functional plane(DFP) 分布功传输时延transmission delay metropolitan-area network(WAN) 城域网能平面远程监控remote monitoring metropolitan area network(WAN) 城域网，DQDB(distributed queue dual bus) 分布式光链路optical link 城市网络队列双总线拓扑结构Topology congestion 充满，拥挤，阻塞 hierarchy 分层，层次均方根root mean square collision 冲突 partition 分成whatsoever=whatever 0 extractive 抽出;释放出 segmentation 分割switchboard (电话)交换台 extract 抽取，取出，分离 interface 分界面，接口bipolar (电子)双极的 lease 出租，租约，租界期限，租界物 asunder 分开地，分离地 premise (复)房屋，前提 pass on 传递，切换 detached 分离的，分开的，孤立的 cursor (计算机尺的)游标，指导的 transmission 传输 dispense 分配 elapse (时间)经过，消失 facsimile 传真 allocate 分配，配给;配给物vaporize (使)蒸发 innovative=innovatory 创新的，富有革新精神centigrade 分为百度的，百分度的，摄氏温度subsystem (系统的)分部，子系统，辅助系的的统 track 磁道 fractal 分形 metallic (像)金属的，含金属的，(声音)impetus 促进，激励 molecule 分子，微小，些微刺耳的 cluster 簇cellular 蜂窝状的 dispatch (迅速)派遣，急件 stored-program control(SPC) 存储程序控制 cellular 蜂窝状的，格形的，多孔的 consensus (意见)一致，同意 a large number of 大量的 auxiliary storage(also called secondary storage)deadline (最后)期限，截止时间 peal 大声响，发出辅助存储器tomographic X线体层摄像的 supersede 代替 decay 腐烂，衰减，衰退 alas 唉，哎呀 supplant 代替，取代 negative 负电 cluster 把…集成一束，一组，一簇，一串，out-of-band signaling 带外信号 vicinity 附近，邻近一群simplex transmission 单工传输 vicinity 附近地区，近处 encyclopedia 百科全书 monochromatic 单色的，单色光的，黑白的 sophisticated 复杂的，高级的，现代化的 millionfold 百万倍的 ballistic 弹道的，射击的，冲击的 high-frequency(HF) 高频 semiconductor 半导体 conductor 导体 high definition television 高清晰度电视 radius 半径范围，半径，径向射线 hierarchy 等级制度，层次 chromium 铬 half-duplex transmission 半双工传输 infrastructure 底层结构，基础结构 annotate 给…作注解 accompaniment 伴随物，附属物geographic 地理的，地区的 in terms of 根据，按照 reservation 保留，预定geographically 地理上 disclosure 公布，企业决算公开 quotation 报价单，行情报告，引语 GIS(ground instrumentation system) 地面测public network 公用网 memorandum 备忘录量系统 functionality 功能，功能度 redundancy 备用ground station 地面站 mercury 汞 be viewed as 被看作… earth orbit 地球轨道 resonator 共鸣器 be regards as 被认为是 extraterrestrial 地球外的，地球大气圈外的 resonance 共振 as such 本身;照此;以这种资格 Land-sat 地球资源卫星 whimsical 古怪的，反复无常的 textual 本文的，正文的 rug 地毯，毯子 administration 管理，经营 verge 边界 ignite 点火，点燃，使兴奋cursor 光标(显示器)，游标，指针 variation 变化，变量 electromagnetic 电磁的 optical computer 光计算机 conversion 变化，转化 inductive 电感photoconductor 光敏电阻 identity 标识;标志 arc 电弧 optical disks 光盘criterion 标准，准则 telephony 电话(学)，通话 optically 光学地，光地 in parallel on 并联到，合并到 dielectric 电介质，绝缘材料;电解质的，绝wide-area networks 广域网 juxtapose 并置，并列缘的 specification 规范，说明书 dialing pulse 拨号脉冲 capacitor 电容 silicon 硅 wave-guide 波导telecommunication 电信，无线电通讯 the international telecommunication union(ITU)wavelength division multiplexed 波分复scenario 电影剧本，方案国际电信联盟用 modem pool 调制解调器(存储)池 excess 过剩 baud rate 波特率 superimposing 叠加，重叠 obsolete 过时的，废弃的 playback 播放(录音带，唱片) pin 钉住，扣住，抓住 maritime 海事的 no greater than 不大于customize 定做，定制 synthetic 合成的，人造的，综合的 update 不断改进，使…适合新的要求，更monolithic 独立的，完全统一的 synthetic 合成的，综合性的新 aluminize 镀铝 rational 合乎理性的 asymmetric 不对称的strategic 对全局有重要意义的，战略的 rationalization 合理化 irrespective 不考虑的，不顾的 substantial 多的，大的，实际上的 streamline 合理化，理顺 inevitably 不可避免的 multi-path fading 多径衰落 infrared 红外线的，红外线 inevitable 不可避免的，不可逃避的，必定的 multi-path 多路，多途径;多路的，多途径的 skepticism 怀疑论 segment 部分 multi-access 多路存取，多路进入 ring network 环形网 abrasion 擦伤，磨损 multiplex 多路复用hybrid 混合物counterpart 伙伴，副本，对应物 pervasive 扩大的，渗透的implementation 实施，实现，执行，敷设 electromechanical 机电的，电动机械的 tensile 拉力的，张力的 entity 实体，存在 Robot 机器人 romanticism 浪漫精神，浪漫主义 vector quantification 矢量量化 Robotics 机器人技术，机器人学 discrete 离散，不连续 mislead 使…误解，给…错误印象，引错accumulation 积累 ion 离子 vex 使烦恼，使恼火，基础结构 force 力量;力infrastructure 基础defy 使落空 substrate 基质，底质 stereophonic 立体声的 facilitate 使容易，促进 upheaval 激变，剧变 continuum 连续统一体，连续统，闭联集 retina 视网膜 compact disc 激光磁盘(CD) smart 灵巧的;精明的;洒脱的 compatible 适合的，兼容的 concentrator 集中器，集线器 token 令牌transceiver 收发两用机 centrex system 集中式用户交换功能系统 on the other hand 另一方面 authorize 授权，委托，允许 converge on 集中于，聚集在…上 hexagonal 六边形的，六角形的 data security 数据安全性 lumped element 集总元件 hexagon 六角形，六边形 data independence 数据独立CAI(computer-aided instruction) 计算机monopoly 垄断，专利 data management 数据管理辅助教学 video-clip 录像剪辑 database 数据库computer-integrated manufacturing(CIM) 计aluminum 铝 database management system(DBMS) 数算机集成制造 pebble 卵石，水晶透镜据库管理信息系统 computer mediated communication(CMC) 计forum 论坛，讨论会database transaction 数据库事务算机中介通信 logical relationships 逻辑关系 data integrity 数据完整性，数据一致性 record 记录 code book 码本attenuation 衰减 register 记录器，寄存器 pulse code modulation(PCM) 脉冲编码调制 fading 衰落，衰减，消失 expedite 加快，促进 roam 漫步，漫游dual 双的，二重的 weight 加权 bps(bits per second) 每秒钟传输的比特transient 瞬时的 accelerate 加速，加快，促进 ZIP codes 美国邮区划分的五位编码 deterministic 宿命的，确定的 categorize 加以类别，分类susceptible(to) 敏感的，易受…的 algorithm 算法 in addition 加之，又，另外 analog 模拟，模拟量 dissipation 损耗 hypothetical 假设的 pattern recognition模式识别 carbon 碳 rigidly 坚硬的，僵硬的 bibliographic 目录的，文献的 diabetes 糖尿病 compatibility 兼容性，相容性 neodymium 钕cumbersome 讨厌的，麻烦的，笨重的 surveillance 监视 the european telecommunication razor 剃刀，剃 surveillance 监视 standardization institute(ETSI) 欧洲电信标准go by the name of 通称，普通叫做 retrieval 检索，(可)补救局 commucation session 通信会话 verification 检验coordinate 配合的，协调的;使配合，调整 traffic 通信业务(量) simplicity 简单，简明 ratify 批准，认可 synchronous transmission 同步传输 film 胶片，薄膜 bias 偏差;偏置 concurrent 同时发生的，共存的 take over 接管，接任 deviate 偏离，与…不同 simultaneous 同时发生的，同时做的 ruggedness 结实 spectrum 频谱 simultaneous 同时发生的，一齐的 threshold 界限，临界值 come into play 其作用 coaxial 同轴的 with the aid of 借助于，用，通过entrepreneurial 企业的 copper 铜 wire line 金属线路，有线线路 heuristic methods 启发式方法 statistical 统计的，统计学的 coherent 紧凑的，表达清楚的，粘附的，相play a …role(part) 起…作用 dominate 统治，支配干的stem from 起源于;由…发生 invest in 投资 compact 紧密的 organic 器官的，有机的，组织的 perspective 透视，角度，远景 approximation 近似hypothesis 前提 graphics 图示，图解 undertake 进行，从事 front-end 前置，前级 pictorial 图像的 transistor 晶体管 potential 潜势的，潜力的coating 涂层，层 elaborate 精心制作的，细心完成的，周密安intensity 强度deduce 推理排的 reasoning strategies 推理策略 coincidence 巧合，吻合，一致vigilant 警戒的，警惕的 scalpel 轻便小刀，解剖刀 inference engine 推理机 alcohol 酒精，酒 inventory 清单，报表 topology 拓扑结构 local area networks(LANs) 局域网 heterodyne 外差法的 spherical 球的，球形的local-area networks(LANs) 局域网 distinguish 区别，辨别 peripheral外界的，外部的，周围的 drama 剧本，戏剧，戏剧的演出 succumb 屈服，屈从，死 gateway 网关 focus on 聚集在，集中于，注视 hazardous 危险的 global functional plane(GFP) 全局功能平面insulator 绝缘 full-duplex transmission 全双工传输 microwave 微波(的) root mean square 均方根 hologram 全息照相，全息图 microprocessor 微处理机，微处理器 uniform 均匀的 microelectronic 微电子 deficiency 缺乏open-system-interconnection(OSI) 开放系thermonuclear 热核的 nuance微小的差别(色彩等) 统互连 artifact 人工制品 encompass 围绕，包围，造成，设法做到 expire 开始无效，满期，终止 AI(artificial intelligence) 人工智能 maintenance 维护;保持;维修 immunity 抗扰，免除，免疫性 fusion 熔解，熔化 satellite communication 卫星通信take…into account 考虑，重视… diskettes(also called floppy disk) 软盘 satellite network 卫星网络programmable industrial automation 可编程sector 扇区 transceiver 无线电收发信机工业自动化 entropy 熵 radio-relay transmission 无线电中继传输demountable 可拆卸的 uplink 上行链路 without any doubt 无疑 tunable 可调的 arsenic 砷 passive satellite 无源卫星 reliable 可靠 neural network 神经网络 sparse 稀少的，稀疏的 be likely to 可能，大约，像要 very-high-frequency(VHF) 甚高频 downlink 下行链路 videotex video 可视图文电视upgrade 升级 precursor 先驱，前任 negligible 可以忽略的 distortion 失真，畸变 visualization 显像 aerial 空气的，空中的，无形的，虚幻的;天线identification 识别，鉴定，验明 feasibility 现实性，可行性 broadband 宽(频)带 pragmatic 实际的 linearity 线性度constrain 限制，约束，制约 regenerative 再生的 ABC American Broadcasting Company 美considerable 相当的，重要的 improve over 在……基础上改善国广播公司 geo-stationary 相对地面静止 play important role in 在…中起重要作用 Automatic Bass Compensation 自动低音by contrast 相反，而，对比起来 in close proximity 在附近，在很近补偿 coorelation 相关性underlying 在下的，基础的 Automatic Brightness Control 自动亮度控制mutual 相互的 in this respect 在这方面mutually 相互的，共同的 entail 遭遇，导致 ABL Automatic Black Level 自动黑电平 interconnect 相互连接，互连 presentation 赠与，图像，呈现，演示 ABLC Automatic Brightness Limiter Circuit 自动亮度限制电路 one after the other 相继，依次 narrowband 窄(频)带minicomputer 小型计算机 deploy 展开，使用，推广应用 ABU Asian Broadcasting Union 亚洲广播protocol 协议，草案 megabit 兆比特联盟(亚广联 ABS American Bureau of Standard 美国protocol 协议，规约，规程germanium 锗psycho-acoustic 心理(精神)听觉的;传音positive 正电标准局的quadrature 正交 AC Access Conditions 接入条件 channelization 信道化，通信信道选择 orthogonal 正交的 Audio Center 音频中心 run length encoding 行程编码 quadrature amplitude modulation(QAM) 正 ACA Adjacent Channel Attenuation 邻频groom 修饰，准备交幅度调制道衰减 virtual ISDN 虚拟ISDN on the right track 正在轨道上 ACC Automatic Centering Control 自动中multitude 许多，大批，大量 sustain 支撑，撑住，维持，持续心控制whirl 旋转 outgrowh 支派;长出;副产品 Automatic Chroma Control 自动色度(增preference 选择，喜欢 dominate 支配，统治益avalanche 雪崩 knowledge representation 知识表示 ACK Automatic Chroma Killer 自动消色pursue 寻求，从事 knowledge engineering 知识工程器 interrogation 询问 knowledge base 知识库 ACP Additive Colour Process 加色法 dumb 哑的，不说话的，无声的 in diameter 直径 ACS Access Control System 接入控制系subcategory 亚类，子种类，子范畴 helicopter 直升飞机统 orbital 眼眶;轨道 acronym 只取首字母的缩写词 Advanced Communication Service 高级oxygen 氧气，氧元素 as long as 只要，如果通信业务 service switching and control points(SSCPs) 业tutorial 指导教师的，指导的 Area Communication System 区域通信务交换控制点 coin 制造(新字符)，杜撰系统service control points(SCPs) 业务控制点 fabrication 制造，装配;捏造事实 ADC Analog to Digital Converter 模-数转service controlfunction(SCF) 业务控制功能 proton 质子换器 in concert 一致，一齐intelligence 智能，智力，信息 Automatic Degaussirng Circuit 自动消磁handover 移交，越区切换 intelligent network 智能网电路 at a rate of 以……的速率 intermediate 中间的 ADL Acoustic Delay Line 声延迟线 in the form of 以…的形式 nucleus(pl.nuclei) 中心，核心 ADS Audio Distribution System 音频分配base on… 以…为基础 neutrons 中子系统 yttrium 钇(稀有金属，符号Y) terminal 终端，终端设备 AE Audio Erasing 音频(声音asynchronous transmission 异步传输 overlay 重叠，覆盖，涂覆 AEF Automatic Editing Function 自动编asynchronous 异步的 highlight 重要的部分，焦点辑功能 exceptional 异常的，特殊的 charge 主管，看管;承载 AES Audio Engineering Society 音频工程voice-grade 音频级 dominant 主要的，控制的，最有力的协会indium 铟 cylinder 柱面 AF Audio Frequency 音频 give rise to 引起，使产生 expert system 专家系统 AFA Audio Frequency Amplifier 音频放大private network 专用网络器 cryptic 隐义的，秘密的hard disk 硬盘 transition 转变，转换，跃迁 AFC Automatic Frequency Coder 音频编hard automation 硬自动化 relay 转播码器 relay 转播，中继Automatic Frequency Control 自动频率by means of 用，依靠equip with 用…装备 repeater 转发器，中继器控制 subscriber 用户pursue 追赶，追踪，追求，继续 AFT Automatic Fine Tuning 自动微调 desktop publish 桌面出版 Automatic Frequency Track 自动频率跟telex 用户电报PBX(private branch exchange) 用户小交换机ultraviolet 紫外线的，紫外的;紫外线辐射踪或专用交换机 field 字段 Automatic Frequency Trim 自动额率微vendor 自动售货机，厂商调 be called upon to 用来…，(被)要求…superiority 优势 naturally 自然的;天生具备的 AGC Automatic Gain Control 自动增益控predominance 优势，显著 synthesize 综合，合成制integrate 综合，使完全 AI Artificial Intelligence 人工智能 active satellite 有源卫星in comparison with 与…比较 ISDN(intergrated services digital network) 综 ALM Audio-Level Meter 音频电平表 comparable to 与…可比合业务数字网 AM Amplitude Modulation 调幅 preliminary 预备的，初步的 as a whole 总体上 AMS Automatic Music Sensor 自动音乐premonition 预感，预兆bus network 总线形网传感装置 nucleus 原子核 crossbar 纵横，交叉 ANC Automatic Noise Canceller 自动噪valence 原子价 impedance 阻抗声消除器circumference 圆周，周围 initial 最初的，开始的 ANT ANTenna 天线teleprocessing 远程信息处理，遥控处理 optimum 最佳条件 AO Analog Output 模拟输出 perspective 远景，前途 appear as 作为…出现 APS Automatic Program Search 自动节constrain 约束，强迫 A Analog 模拟目搜索 mobile运动的，流动的，机动的，装在车 A/D Analog to Digital 模-数转换 APPS Automatic Program Pause System 上的 AAC Advanced Audio Coding 高级音频编自动节目暂停系统 convey 运输，传递，转换码 APSS Automatic Program Search System impurity 杂质 ABB Automatic Black Balance 自动黑平自动节目搜索系统 impurity 杂质，混杂物，不洁，不纯衡 AR Audio Response 音频响应ARC Automatic Remote Control 自动遥 BTA Broadband Terminal Adapter宽带 CII China Information Infrastructure 中国控终端适配器信息基础设施ASCII American Standard Code for Broadcasting Technology Association (日CIF Common Intermediate Format 通用中Information Interchange 美国信息交换标准本间格式 AST Automatic Scanning Tracking 自动 BTL Balanced Transformer-Less 桥式推 CIS Chinese Industrial Standard 中国工业扫描跟踪挽放大电路标准ATC Automatic Timing Control 自动定时 BTS Broadcast Technical Standard 广播 CLV Constant Linear Velocity 恒定线速度控制技术标准 CM Colour Monitor 彩色监视器 Automatic Tone Correction 自动音频校 BTU Basic Transmission Unit 基本传输单 CMTS Cable Modem Termination System正元线缆调制解调器终端系统 ATM Asynchronous Transfer Mode 异步 BVU Broadcasting Video Unit 广播视频 CNR Carrier-to-Noise Ratio 载噪比传输模式型(一种3/4英寸带录像机记录格式 CON Console 操纵台ATF Automatic Track Finding 自动寻迹 BW BandWidth 带宽 Controller 控制器 ATS Automatic Test System 自动测试系 BWTV Black and White Television 黑白 CPB Corporation of Public Broadcasting 统电视 (美国公共广播公司ATSC Advanced Television Systems CA Conditional Access 条件接收 CPU Central Processing Unit 中央处理单元 Committee (美国高级电视制式委员会) CAC Conditional Access Control 条件接 CRC Cyclic Redundancy Check 循环冗余校 ***C Automatic Volume Control 自动音收控制验量控制 CAL Continuity Accept Limit 连续性接 CRCC CRI Cyclic Redundancy Check Code ***R Automatic Voltage Regulator 自动受极限循环冗余校验码稳压器 CAS Conditional Access System 条件接 CROM China Radio International 中国国际AWB Automatic White Balance 自动白平收系统广播电台衡 Conditional Access Sub-system 条件接 CRT Control Read Only Memory 控制只读 AZC Automatic Zooming Control 自动变收子系统存储器焦控制 CATV Cable Television 有线电视，电缆电 CS Cathode-Ray Tube 阴极射线管 AZS Automatic Zero Setting 自动调零视 CSC Communication Satellite 通信卫星 BA Branch Amplifier 分支放大器 Community Antenna Television 共用天 CSS Color Sub-carrier 彩色副载波Buffer Amplifier 缓冲放大器线电视 Center Storage Server 中央存储服务器 BAC Binary-Analog Conversion 二进制模 C*** Constant AngularVelocity 恒角速 Content Scrambling System 内容加扰系统拟转换度 CSU Channel Service Unit 信道业务单元BB Black Burst 黑场信号 CBC Canadian Broadcasting Corporation CT Color Temperature 色温 BBC British Broadcasting Corporation 英加拿大广播公司 CTC Cassette Tape Controller 盒式磁带控国广播公司 CBS Columbia Broadcasting System (美制器BBI Beijing Broadcasting Institute 北京国哥伦比亚广播公司 Channel Traffic Control 通道通信量控制广播学院 CC Concentric Cable 同轴电缆Counter Timer Circuit 计数器定时器电路 BC Binary Code 二进制码 CCG Chinese Character Generator 中文 Counter Timer Control 计数器定时器控制Balanced Current 平衡电流字幕发生器 CTE Cable Termination Equipment 线缆终 Broadcast Control 广播控制 CCIR International Radio Consultative 端设备 BCT Bandwidth Compression Technique Committee 国际无线电咨询委员会 Customer Terminal Equipment 用户终端设带宽压缩技术 CCITT International Telegraph and 备 BDB Bi-directional Data Bus 双向数据总Telephone Consultative CTV Color Television 彩色电视线 Committee 国际电话电报咨询委员会 CVD China Video Disc 中国数字视盘BER Basic Encoding Rules 基本编码规则 CCR Central Control Room 中心控制室 CW Carrie Wave 载波 Bit Error Rate 比特误码率 CCTV China Central Television 中国中央 DAB Digital Audio Broadcasting 数字音频 BF Burst Flag 色同步旗脉冲电视台广播BFA Bare Fiber Adapter 裸光纤适配器 Close-Circuit Television 闭路电视 DASH Digital Audio Stationary Head 数字 Brillouin Fiber Amplifier 布里渊光纤放大 CCS Center Central System 中心控制系音频静止磁头器统 DAT Digital Audio Tape 数字音频磁带BGM Background Music 背景音乐 CCU Camera Control Unit 摄像机控制器DBMS Data Base Management System 数 BIOS Basic Input,Output System 基本CCW Counter Clock-Wise 反时针方向据库管理系统输入输出系统 CD Compact Disc 激光唱片 DBS Direct Broadcast Satellite 直播卫星B-ISDN Broadband-ISDN 宽带综合业务 CDA Current Dumping Amplifier 电流放 DCC Digital Compact Cassette 数字小型盒数据网大器带 BIU Basic Information Unit 基本信息单 CD-E Compact Disc Erasable 可抹式激光Dynamic Contrast Control 动态对比度控制元唱片 DCT Digital Component Technology 数字 Bus Interface Unit 总线接口单元 CDFM Compact Disc File Manager 光盘分量技术 BM Bi-phase Modulation 双相调制文件管理(程序Discrete Cosine Transform 离散余弦变换BML Business Management Layer 商务 CDPG Compact-Disc Plus Graphic 带有静 DCTV Digital Color Television 数字彩色电管理层止图像的CD唱盘视BN Backbone Network 主干网 CD-ROM Compact Disc-Read Only DD Direct Drive 直接驱动BNT Broadband Network Termination 宽Memory 只读式紧凑光盘 DDC Direct Digital Control 直接数字控制带网络终端设备 CETV China Educational Television 中国 DDE Dynamic Data Exchange 动态数据交 BO Bus Out 总线输出教育电视台换BPG Basic Pulse Generator 基准脉冲发 CF Color Framing 彩色成帧 DDM Data Display Monitor 数据显示监视生器 CGA Color Graphics Adapter 彩色图形器 BPS Band Pitch Shift 分频段变调节器 (显示卡 DES Data Elementary Stream 数据基本码BSI British Standard Institute 英国标准 CI Common Interface 通用接口流学会 CGA Color Graphics Adapter 彩色图形(显示卡 Data Encryption Standard 美国数据加密 BSS Broadcast Satellite Service 广播卫星 CI Common Interface 通用接口标准业务 CIE Chinese Institute of Electronics 中国电 DF Dispersion Flattened 色散平坦光纤 BT Block Terminal 分线盒、分组终端子学会 DG Differential Gain 微分增益 British Telecom 英国电信 DI Digital Interface 数字接口DITEC Digital Television Camera 数字电视摄像机 DL Delay Line 延时线DLD Dynamic Linear Drive 动态线性驱动 DM Delta Modulation 增量调制Digital Modulation 数字调制DMB Digital Multimedia Broadcasting 数字多媒体广播DMC Dynamic Motion Control 动态控制DME Digital Multiple Effect 数字多功能特技 DMS Digital Mastering System 数字主系统DN Data Network 数据网络 DNG Digital News Gathering 数字新闻采集 DNR Digital Noise Reducer 数字式降噪器DOB Data Output Bus 数据输出总线 DOCSIS Data Over Cable Service Interface Specifications 有线数据传输业务接口规范 DOC Drop Out Compensation 失落补偿 DOS Disc Operating System 磁盘操作系统DP Differential Phase 微分相位 Data Pulse 数据脉冲 DPCM Differential Pulse Code Modulation差值脉冲编码调制 DPL Dolby Pro Logic 杜比定向逻辑 DSB Digital Satellite Broadcasting 数字卫星广播 DSC Digital Studio Control 数字演播室控制DSD Dolby Surround Digital 杜比数字环绕声 DSE Digital Special Effect 数字特技DSK Down-Stream Key 下游键 DSP Digital Signal Processing 数字信号处理Digital Sound Processor 数字声音处理器 DSS Digital Satellite System 数字卫星系统 DT Digital Technique 数字技术Digital Television 数字电视 Data Terminal 数据终端 Data Transmission 数据传输DTB Digital Terrestrial Broadcasting 数字地面广播 capacitance欢迎您阅读该资料，希望该资料能给您的学习和生活带来帮助，如果您还了解更多的相关知识，也欢迎您分享出来，让我们大家能共同进步、共同成长。
电子信息工程专业英语英译汉翻译
1 The transistor is what started the evolution of the modern computer industry in motion.晶体管开启了现代电脑工业的革命2 The storage cell only requires one capacitor and one transistor, whereas a flip-flop connected in an array requires 6 transistors.存储单元仅需要一个电容和晶体管，并而不像触发器整列那样需要6个晶体管3 There has been a never ending series of new op amps released each year since then, and their performance and reliability has improved to the point where present day op amps can be used for analog applications by anybody.从此以后每年都有新系列的运放发布，他们的性能和可靠性得到了提升，如今任何人都能用运放来设计模拟电路。
4 This is capable of very high speed conversion and thus can accommodate high sampling rates, but in its basic form is very power hungry.它具有高速转换能力，从而能适应高速采样速率，但它的基本形式非常耗电。
5 During the “on” period , energy is being stored within the core material of the inductor in the form of flux.在”on”阶段，能量以涌浪形式存储在电感的核芯材料里面6 The design goal of frequency synthesizers is to replace multiple oscillators in a system, and hence reduce board space and cost.频率合成器的设计目标是取代系统中多个振荡器，从而减小板卡面积和成本。
专业英语(电子与信息工程类)翻译
1.As data networks advanced…also grew more complex.由于数据网络从面向终端的系统向分组交换、计算机与计算机连接的方向发展, 执行网络功能所必需的协议也变得愈来愈复杂。
2.An additional bit called a parity bit…during transmission.在每个字符的后面有时还包括一个称为奇偶校验位的附加位, 它们测试数据位在传输过程中是否被意外改变。
3.As already stated, with…downlink（FDD paired bands）.如前所述, 在非对称通信量应用中, TD-SCDMA利用可用频谱的效率比其他3G标准高, 因为它在只利用一个频带（TDD单一频带）而不是两个独立的频带（FDD成对频带）进行上行与下行通信。
4.Although often simpler to implement, …digital modulation.虽然光纤系统的模拟调制易于实现, 但其效率较低, 且要求在接收端有比数字调制高得多的信噪比。
5.At present, the bandwidth…electronics （）is possible.目前传输100km的几吉赫兹的调制信号和传输300km的几百兆赫兹的调制信号都是可能的, 因此光纤系统的可用带宽并没有得到充分利用。
6.Both TD-SCDMA deployments-TSD…unpaired bands awarded.TD-SCDMA的两种部署——TSM和TDDCLR的数据速率、频谱利用率、覆盖率、移动性和可靠性等性能是一样的, 并基本上为所有取得非成对TDD频段牌照的运营商所采用。
7.Crossbar sw itching was carried…selection for all calls.纵横制交换由一个称为标志器的特定电路控制, 标志器提供整个号码的公共控制并选择所有呼叫的路由。
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西安邮电学院
毕业设计（论文）
外文文献翻译
系别：电子与信息工程
专业：电子信息工程
班级：电子1002班
学生姓名：桑永茂
导师姓名：张新职称：教授
起止时间：2014年 3月10日至 2014年 6月15日
英文原文
The art of software testing
Glenford J. Myers
W hen you finish module-testing a program, you have really only just begun the testing process. This is especially true of large or complex programs. Consider this important concept:
A software error occurs when the program does not do
what its end user reasonably expects it to do.
Applying this definition, even if you could perform an absolutely perfect module test, you still couldn’t guarantee that you have
found all software errors.
To complete testing, then, some form of further testing is necessary. We call this new form higher-order testing. Software development is largely a process of communicating information about the eventual program and translating this information from one form to another.
For that reason, the vast majority of software errors can be
attributed to breakdowns, mistakes, and noise during the communication and translation of information. This view of software development is illustrated in Figure 6.1, a model of the development cycle for a software product. The flow of the process can be summarized in seven steps:
1. The program user’s needs are translated into a set of written requirements. These are the goals for the product.
2. The requirements are translated into specific objectives by assessing feasibility and cost, resolving conflicting requirements, and establishing priorities and trade-offs.
3. The objectives are translated into a precise product specification, viewing the product as a black box and considering only its
interfaces and interactions with the end user. This description is called the external specification.
4. If the product is a system such as an operating system,
flight-control system, database management system, or employee personnel system, rather than a program (compiler, payroll program, word processor), the next process is system design. This step
partitions the system into individual programs, components, or subsystems, and defines their interfaces.。