电气工程及其自动化专业英语复习资料(6页).doc

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1、-电气工程及其自动化专业英语复习资料-第 6 页1.目前，煤仍然是凝汽式电厂最长用的能源。At present coal is the most common food of a steam power plant.2.为防止人畜触电，高压电一般采用架空线输送。High voltage current is usually carried by overhead wire system so as to prevent living things being electrocuted.3.这座由电子计算机控制的核电站将向全市供电。This nuclear power plant which i

2、s computer-controlled will serve the entire city.4.电学与电子学实际上是唯一难以分开的，二者相互渗透，相互联系。Electricity and electronics are really indivisible, each forming part of the other.5.元件技术中起主要作用的是半导体元件。The major contributors in component technology have been in the sosemiconductor components.6.电压，电流和电阻这三个因素是相互关联的。The

3、 factors, voltage, current and resistance , are related to each other .7.电动机与发电机就是以磁和电这二者之间的关系为基础的Based upon the relationship between magnetism and electricity are motors and generators8，随着电气工程学的发展，电力能被输送到非常遥远的地方去。With the development of electrical engineering , power can be transmitted over long di

4、stance.9每时每刻，能量都在由一种形式变成另一种形式。Every moment of every day, energy is being transformed from one form into another.10.只要知道电压和电流，就能测定电阻。The resistance can be determined provided that the voltage and current are known.11.已经证明，能量是不可能消灭的，只能转换成其他形式。It has been proved that energy cant be destroyed , it can o

5、nly be changed into other forms.12。可见磁性材料广泛用于现在电子设备中。It can be seen that magnetic materials are used in a wide range of modern electronic equipment.13.在热电厂燃烧的化学能并未全部转变成热能。In a thermal power plant , all the chemical energy of the fuel is not converted into heat .14.电流过导线就像水流过管子一样。The flowing of elect

6、ricity through a wire is not unlike that of water through a pipe.15.没有检查好仪表，切勿开始做实验。Never start to do the experiment before you have checked the meter16同性电荷相斥，异性电荷相吸Like charges repel each other while opposite charges attract。17发展经济必须注意环境保护Attention must be paid to environmental protection in develo

7、ping economy18nothing in the world moves faster than light19自动化能帮助我们提高产量30%Automation will help us to raise the output of production by thirty percent20只要知道电压、电流、就能测定电阻The resistance can be determined provided that the voltage and current are known1.(A temperature transducer ) is a device that a vol

8、tage or a current proportional to the actual temperature.2.when the speed of the rotor is zero, the ship of induction machine is (1.0).3.copper losses are(resistive) losses in the primary and secondary windings of the transformer core.4.residential and commercial customers are supplied by the second

9、ary distribution feeders of (220/380v).5.the frequency of a power system is determined mainly by (active power generation and consumption).1.many electrical signals derived from physical systems are obtained from devices called (transducers).2.the air-blast circuit breaker makes use the arc-quenchin

10、g properties of (dry and clean compressed air).3.in a computer, most processing take place in a computer called the (CPU).1.the difference between a potential transformer and a power transformer is that potential transformer is designed to handle only a very small current.电压互感器与电力变压器的区别在于电压互感器被设计为只能

11、处理很小的电流。1.可是尽管电压表与电流表之间有这些类似之处，但还有若干重要的差异。However, in spite of all this similarity between a voltmeter and an ammeter there are also important difference.2.在电压相同的情况下，导线的电阻越大，流过的电流就越小。The greater the resistance of a wire, the less electric current will pass through it under the same pressure.3.利用发电机，

12、可将机械能再转变成电能。The mechanical energy can be changed back into electrical energy by means of a generator.4、如果实用变压器，低电压的电力就能抓转换成高电压的电力Using a transformer ，power at low voltage can be transformed into power at high voltage1. It is conventional to take the current flow as the movement of (positive charges)

13、2. Electric current is the time rate of charge, measured in (amperes).3. The energy required to move a unit charge through an element is (voltage).4. The plus (+) and minus (-) signs in an electric circuit diagram are used to define (voltage polarity).5. According to the passive sign convention, if

14、the power has a plus sign, power is (absorbed) by the element.1. An independent voltage source is a (two-terminal element), which maintains a specified voltage between its terminals.2. Resistors are (passive) elements.3. An ideal dependent source is an (active) element in which the source quantity i

15、s controlled by another voltage or current.4. There are (four) possible types of dependent sources.5. For a voltage source, its terminal voltage is known but its (current) must be determined by the external circuit connecting with it1. The voltage produced by a thermocouple pair is (an analog) signa

16、l.2. ON-OFF information can be represented by (a digital) signal.3. A device that can convert an analog signal to the corresponding digital form is called (A/D)for short.4. The thermocouple pair converts temperature difference to a(voltage).5. A D/A is a device that can convert a digital signal to t

17、he equivalent (analog form).1. The process of quantizing the continuous values into a binary scale is called (analog-to-digital conversion).2. (A temperature transducer)is a device that produces a voltage or a current proportional to the actual temperature.3. The precision and the speed of an ADC ar

18、e essentially (incompatible).4. The precision of ADC is determined by (the number of binary bits).5. In Fig.2-4the amplifier performs (two) functions.1. The thumb is in the direction of (the relative motion of conductor)in Flemings right-hand rule.2. In induction motors the speed of the rotating rot

19、or (never reaches)the speed of the rotating magnetic field.3. When the speed of the rotor is zero, the slip of induction machine is (1.0).4. Form-wound coils are widely used for (large AC) motors.4-4(P84)1. A transformer is a device that can converter one ac voltage to another ac voltage through the

20、 action of (a magnetic field).2. The primary winding is connected to (the power source).3. The core construction consisting of a three-legged laminated core with the windings wrapped around the centre leg is called (shell form).4. The transformer that takes the distribution voltage and steps it down

21、 to the final voltage at which the power is actually used is called a (distribution transformer).5. Copper losses are (resistive) losses in the primary and secondary windings of the transformer core.5-1(P89)1. A computer works automatically according to (a series of stored instructions)2. A keyboard

22、 or a mouse is (an input) device.3. The computer network for a university is usually described as (a local area network).4. A computer that requests data from a server is called as (client).5. A hard disk is referred to as (a storage) device.5-4(P108)1. (A support module) can be used in conjunction

23、with the main software program to provide an auxiliary set instructions.2. A computers microprocessor only understands (machine language).3. Delphi belongs to (high-level programming language).4. An operating system is considered as (system software).5. (The file management system) allocates and man

24、ages secondary storage space and translates file requests from their name-based form into specific I/O requests.6-1(P118)1. The first complete power system was built in (1882), it was (a DC) power system.2. The first three-phase AC transmission line in North America was put into operation in (1893).

25、3. Power system interconnections are usually formed at the (transmission system) level.4. In North American (60Hz) is adopted as standard frequency in electric power system.5. (The HVDC transmission) can provide an asynchronous link between two ac electric power systems with different nominal freque

26、ncies.6-2(P122)1. In power plants (prime movers) convert the primary energy to mechanical energy, and (synchronous generators) convert mechanical energy to electric energy.2. The generator voltages are usually stepped up to the transmission voltage level by (step-up transformers)3. Residential and c

27、ommercial customers are supplied by the secondary distribution feeders at (220/380V).4. In USA, the voltages of the transmission system are typically (230kV and above)6-3(P130)1. The objective of the optimal economic operation of power systems is (to minimize the total production cost).2. The freque

28、ncy of a power system is determined mainly by (active power generation and consumption).3. The voltage levels at the terminals of generators are controlled mainly by (automatic voltage regulators).4. When the system frequency is changed away from the rating, (active power) must be regulated.5. Regul

29、ation of the generators speed governor can change its (active power) output.7-2(P148)1. At the fault point in electrical equipment, there may be (all of the above).2. Among the following faults on a transmission line, the most severe one is usually the (3-0 fault).3. Among the following faults on a

30、transmission line, the most common one is the (single line to ground fault).4. The most common fault in the generators stator winding is (phase to ground fault).5. If generator overspeed occurs in a thermal power plant, the action most possibly undertaken is (to shut off the steam).7-3(P152)1. The u

31、se of transformer oil in a minimum-oil circuit breaker is (to quench the arc and establish an insulated break between the contacts)2. A circuit breaker mainly consists of (three) parts.3. The air-blast circuit breaker makes use the arc-quenching properties of (dry and clean compressed air).4. The re

32、ason that the SF6 circuit breaker is widely used is (the excellent arc quenching and insulating).5. Vacuum-bottle interrupters are designed for (higher system voltage, current).8-2(P171)1. In hydropower plants, (Francis turbines) are frequently used for medium heads.2. During times of the off-peak l

33、oad, a pumped-storage plant should (absorb energy from the power network),3. The overall efficiency of a pumped storage plant is usually about (65%70%).4. The start-up speed of a hydropower plant is (faster than) that of a thermal plant.5. The hydropower is well suited for switching according to (a

34、dispatchers) an operators奔波在俗世里，不知从何时起，飘来一股清流，逼着每个人优秀。人过四十，已然不惑。我们听过别人的歌，也唱过自己的曲，但谁也逃不过岁月的审视，逃不过现实的残酷。如若，把心中的杂念抛开，苟且的日子里，其实也能无比诗意。借一些时光，寻一处宁静，听听花开，看看花落，翻一本爱读的书，悟一段哲人的赠言，原来，日升月落，一切还是那么美。洗不净的浮沉，留给雨天；悟不透的凡事，交给时间。很多时候，人生的遗憾，不是因为没有实现，而是沉于悲伤，错过了打开心结的时机。有人说工作忙、应酬多，哪有那么多的闲情逸致啊？记得鲁迅有句话：“时间就像海绵里的水，只要挤总是有的。”不明

35、花语，却逢花季。一路行走，在渐行渐远的时光中，命运会给你一次次洗牌，但玩牌的始终是你自己。坦白的说，我们遇到困扰，经常会放大自己的苦，虐待自己，然后落个遍体鳞伤，可怜兮兮地向世界宣告：自己没救了！可是，那又怎样？因为，大多数人关心的都是自己。一个人在成年后，最畅快的事，莫过于经过一番努力后，重新认识自己，改变自己。学会了独自、沉默，不轻易诉说。因为，更多的时候，诉说毫无意义。伤心也好，开心也好，过去了，都是曾经。每个人都要追寻活下去的理由，心怀美好，期待美好，这个世界，就没有那么糟糕。或许，你也会有这样的情节，两个人坐在一起，杂乱无章的聊天，突然你感到无聊，你渴望安静，你想一个人咀嚼内心的悲与

36、喜。透过窗格，发着呆，走着神，搜索不到要附和的词。那一刻，你明白了，这世间不缺一起品茗的人，缺的是一个与你同步的灵魂。没有了期望的懂，还是把故事留给自己吧！每个人都是一座孤岛，颠沛流离，浪迹天涯。有时候，你以为找到了知己，其实，你们根本就是两个世界的人。花，只有在凋零的时候，才懂得永恒就是在落红中重生；人，只有在落魄的时候，才明白力量就是在破土中崛起？.因为防备，因为经历，我们学会了掩饰，掩饰自己内心的某些真实，也在真实中，扬起无懈可击的微笑，解决一个又一个的困扰。人生最容易犯的一个错误，就是把逝去的当作最美的风景。所以，不要活在虚妄的世界，不要对曾经存在假设，不要指望别人太多。有些情，只可随

37、缘，不可勉强；有些人，只可浅交，不可入深；有些话，只可会意，不可说穿。或许，有这么一段情，陪你度过漫长冰冷的寒冬；有那样一个人，给你抑郁的天空画上了温暖的春阳。但时光，总会吹散很多往事，把过去一片片分割，移植到不同区域，并贴上标签，印着不同的定义，也定义着自己的人生态度。正如庄子所说：“唯至人乃能游于世不避，顺人而不失己。”外在的世界，只是一个形式，而你内在的世界，才是真正的江山。丰富自己，取悦自己，随缘，随顺，随境，你的心才会敞开，才会接纳更多的有可能。这样的人生，眼睛里的笑意，尽是踏实与真味。年少时，那些说给蓝天白云的梦想，早已遗忘在风中，再也飞不到岁月的枝头。褪去稚气与懵懂，我更喜欢现在的自己，心里撑着宽阔，却不动声色。即便，一份静谧的从容是多么的难，但我依旧期待。我相信，人生还会很长，还会一直邂逅，但最美的，必是那个明天的自己。