科技英语无敌法宝.docx

conveyance kEn5veiEns：n.运输，传输 generating station：发电站 generator 5dVenEreitE：n.发电机, 发生器 substation 5sQbsteiFEn：n.变电站 distribution network：配电网 disturbance dis5tE:bEns：n.干扰,扰动 efficiency i5fiFEnsi：a.有效的,生效的n. 效率 reliability ri7laiE5biliti：n.可靠性 waveform 5weivfC:m：n. 波形 operating 5CpEreitiN：adj.运行的 real power：有功功率 reactive power：无功功率 primary distribution system：一次配电系统 overhead line：架空线 cable 5keibl：n.电缆, steel tower：钢塔，铁塔 insulator 5insjuleitE：n.绝缘体;绝缘子 aluminum E5lju:minEm：n 铝 lightning arrestor：避雷针,避雷器 circuit breaker：断路器 relay 5ri:lei：继电器 regulating 5rejuleitiN：调节 potential pE5tenF(E)l：n. 电位，电势 inductive reactance：感抗 capacitive reactance：容抗 surge sE:dV：n. 电涌，冲击波，波动 skin effect：集肤效应 corona kE5rEunE：n. 电晕 dielectric 7daii5lektrik：n.电介质, 绝缘体 synchronizing 5siNkrEnaiziN：v.同步adj. 同步的 rectifier 5rektifaiE：n.整流器 thyratron 5WairEtrCn：n.闸流管 extra-high voltage (EHV)：超高压 ultra-high voltage (UHV)：特高压 right-of-way：公用线路，公用通路disconnect switch：隔离开关bus bar：母线current transformer（CT）：电流互感器potential transformer（PT）：电压互感器grounding 5raundiN：n.接地shielding 5Fi:ldiN：n.屏蔽, 保护, 隔离magnetic core：n. 磁芯winding 5waindiN：n.绕, 缠, 绕组, 线圈iron core：n.铁芯primary coil：一次线圈，初级线圈secondary 5sekEndEri：二次线圈，次级线圈impedance matching：阻抗匹配electrical isolation：电隔离microprocessormaIkrEJ5prEJsesE(r)：微处理器metering 5mi:tEriN：n.测量(法), 计量, 测定induce in5dju:s：vt. 感应magnetic flux：磁通electromagnet IlektrEJ5mAnIt：n.电磁体permanent magnet：永磁体stator5steitE：n.定子rotor 5rEutE：n.转子shaft FB:ft：n.轴, 杆状物housing 5hauziN：n. 壳，套prime mover：原动机windmill 5windmil：n. 风车, 风车房hydroturbine 7haidrE5tE:bin：n. 水轮机diesel 5di:zEl：n.柴油机wrench rentF：n.扳钳, 扳手abbreviation E7bri:vi5eiFEn：n.缩写, 缩写词pump pQmp：n.泵, 抽水机magnetic field：磁场electromagnetic IlektrEJ5mAnItIk：adj.电磁的torque tC:k：n.扭矩, 转矩yoke jEuk：n.轭, 轭状物, 套, 束缚, 支配field pole：磁极laminated 5lAmineitid：adj.薄板状的,层压的reluctance rI5lQktEns：n.磁阻armature 5B:mEtjuE：n.电枢squirrel-cage：鼠笼式brushbrQF：（电）刷contact 5kCntAkt：接触，触点graphite 5rAfait：n.石墨commutator 5kCmjuteitE：n.换向器, 转接器sparking 5spB:kiN：n.火花，点火lubricant 5lu:brikEnt：adj.润滑的；n.润滑剂bearing 5bZEriN：n.轴承core kC:：n.铁心eddy current：涡流1. The mathematical representation of a wave, especially a graph obtained by plotting a characteristic of the wave against time.(waveform)2. A material such as glass or porcelain with negligible electrical or thermal conductivity. (insulator)3. A bound or sheathed group of mutually insulated conductors. (cable)4. The tendency of alternating current to flow near the surface of a conductor.(skin effect)5. A device, such as a diode, that converts alternating current to direct current. (rectifier)1. A coil to which the input voltage is applied in an inductively coupled circuit, especially a transformer. (primary coil) 2. An automatic switch that stops the flow of electric current in a suddenly overloaded or otherwise abnormally stressed electric circuit. (circuit breaker )3. Control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit switch 4. Fastening electrical equipment to earth.( grounding)5. A structure or arrangement of metal plates or mesh designed to protect a piece of electronic equipment from electrostatic or magnetic interference. (shielding)1. The generation of electromotive force in a closed circuit by a varying magnetic flux through the circuit.(induction)2. A measure of the quantity of magnetism, being the total number of magnetic lines of force passing through a specified area in a magnetic field.(magnetic flux) 3. The initial force, such as electricity, wind, or gravity, that engages or moves a machine. (prime mover)4. The measure of a forces tendency to produce torsion and rotation about an axis, equal to the vector product of the applied force and distance.(torgue)5. The amount of electric charge flowing past a specified circuit point per unit time. (current)6. One that generates, especially a machine that converts mechanical energy into electrical energy. (generator)7. The stationary part of a motor, dynamo, turbine, or other working machine about which a rotor turns. (stator)8. A device that supports, guides, and reduces the friction of motion between fixed and moving machine parts.(bearing)9. A machine or device for raising, compressing, or transferring fluids. (pump)1. A connection between two conductors that permits a flow of current. (contact)2. The rotating part of a dynamo, consisting essentially of copper wire wound around an iron core. (armature) 3. A measure of the opposition to magnetic flux, analogous to electric resistance. (reluctance)4. A condition found in the region around a magnet or an electric current, characterized by the existence of a detectable magnetic force at every point in the region and by the existence of magnetic poles. (magnetic field)5. A soft iron rod in a coil or transformer that provides a path for and intensifies the magnetic field produced by the windings.(coil) 6. A device that supports, guides, and reduces the friction of motion between fixed and moving machine parts.(bearing)这样的绕组被称作三相绕组，由于每相中由旋转磁场密度感应的电压相差120这是三相平衡系统的显著特征 由于电力供应、一次能源和经济等方面的有限性，电机节能器得到越来越广泛的应用。但是电机节能器在应用中，由于负载的不对称，容易产生三相不对称交流电压，甚至是直流电压，严重时会损坏电气设备。 同步发电机是配有直流励磁机的同步交流发电机。同步发动机能作为独立的紧急电源，也可以与其他同步发电机或系统并联运行。1.Assembly of microscopic electronic components (transistors, diodes, capacitors, and resistors) and their interconnections fabricated as a single unit on a wafer of semiconducting material, especially silicon. (integrated circuit)2. Incorporates most or all of the functions of a computers central processing unit (CPU) on a single integrated circuit (IC, or microchip). (microprocessor)3. A specialized electronic component with two electrodes called the anode and the cathode. (diode)4. A four-layer semiconductor device, consisting of alternating P type and N type materials (PNPN).(thyristor)5. A semiconductor device used to amplify and switch electronic signals. It is made of a solid piece of semiconductor material, with at least three terminals for connection to an external circuit.(transistor)6. An electronic voltage high-gain DC-coupled amplifier typically with a single ended output and a differential input. An operational amplifier produces an output voltage that is usually several millions times greater than the difference in voltage between its two input terminals. (operational amplifier)7. A device which converts continuous signals to discrete digital numbers(AD convertor) 8. Designed for a specific reverse breakdown voltage. When reverse biased the voltage across a it remains constant. Most commonly used in power supply system.(zener diodes)1. Why BJT is called current control device? The voltage at the output is directly proportional to the input current, thus it is a current controlled device. It means that the output is controlled by input current.2. The function of a transistor used in any of the ICs is to perform SWITCHING action and not AMPLIFICATION.Then why DIODES are not used instead of TRANSISTORS as diodes also exhibit the same switching action? Consider the differential pair of transistors that form the front end of an op amp. The advantage of transistors over diodes, is that transistors have a control input and diodes do not. You can use the bipolar transistors base input (or the gate input of a CMOS transistor) to control a larger current with amplification, or overdrive to turn On/Off.1. This is when information is entered into a computer. Some common devices include the keyboard, mouse and scanner.(input)2. This is the information that comes out of a computer after it has been processed. The information comes out on devices such as a printer or computer monitor.(output)3. Its like a mini, portable hard drive! You plug it into the USB (Universal Serial Bus) port . (flash drive)4. an electronic circuit board, located inside the computer, that can produce music and high quality sounds. . (soundcard) 5. When a computer processes information, it uses software programs. Each program requires a certain amount of electronic temporary memory to run correctly. (ram)6. The information was put there when the computer was made. This memory is permanent. The computer needs the information in it to function.(rom)7. a magnetic storage device. All the computer programs and files you create and save are located there. This is permanent storage (at least until you uninstall software or delete a file). (hard disk drive)8. It ties ev