四川理工的学弟学妹们，特别是自电学院的兄弟伙们，专业英语难过啊，是否需要这个呢？我的淘宝店铺：信诚悦购http://dreammark .taobao .com包你80分电气自动化、自动化专业英语课堂笔记一.短语互译（10个，每个2分，共20分）1、DC/AC : direct/alternating curre nt•（直流/交流）2、a good rule of thumb.（根据经验）3、step-up/step-down transformer （升压/降压变压器）autotra nsformer （自耦变压器）4、gate-turn-off thyristor [ e ai'rist?（门极可关断晶闸管）5、silicon-controlled rectifier（可控硅整流器）6、forward voltage drop（正向压降）7、reverse breakdown voltage（反向击穿电压）8、reverse leakage curren（反向漏电流）9、peak reverse voltage（反向峰值电压）10、forced commutation（强制换流）11、three-phase ac squirrel cage induction motor （三相交流鼠笼式感应电机）12、AM/FM :amplitude/frequency modulatio n（调幅/ 调频）13、active/passive filter （有源/无源滤波器）14、bistable circuit（双稳电路）15、flip-flop （触发器）16、emf：electromotive[i,iektr ?u'm?utiv] force （电动势）17、magnetic flux （磁通）18、magnetizing current （磁化电流/ 励磁电流）19、general-purpose relay（通用继电器）20、solid-state relay（固态继电器）21、time constant （时间常数）22、ADC : analog-to-digital conversion （模数转换器）二、汉译英（5-6个，共30分，2 个课外）1、通过互联网进行商业交易，其便利性和速度是推动电子商品快速发展的主要因素。
The ease and speed with which bus in ess tran sacti ons can be carried out over the web has bee n a key force in rapid growth of electrical commerce.2、用户互动，包括在线客户服务和在线调查，提供了新的交流渠道，这在以前是不可能也是非常低效的。
Customers in teractio ns in cludi ng online customer services and online survey,provides a new channel of com muni catio ns,which were not previously available and very in efficient.3、并绕式直流电动机的调速性能很好。
当负载增加时，由于电枢上电压降的增加，其转速会稍微降低。
The DC shunt-wound motor has a good speed regulati on. The speed will decrease slightly when the load in crease due to the in crease in the voltage drop across the armature.4、用户用于在建筑内传输电能的配电系统类型取决于各自的安装要求，居民住宅通常使用最简单的类型。
The type of distribution system that the con sumer uses to tran smit power with in build ing depe nds on the requireme nts of particular in stallati on, reside ntial buildi ngs gen erally use the simplest one.5、控制系统中控制器参数固定时，其性能将在一定程度上总是取决于被控设备或系统的参数。
The performa nee of a con trol system hav ing a con troller with fixed parameters will always depend to some extent on parameters of the equipme nt or system being con trolled.6、新设备替代老设备将会使产量大大增加。
The substituti on of new equipme nt to the old result in in crease in producti on.7、无论何时，若某元件上电流参考方向与电压参考方向相同时，在任何涉及电压和电流的公式中取正号。
When ever, the reference directi on for the circuit in an element is the directi on of the reference voltage drop across the eleme nt use a positi on sig n in any impression relates to the voltage to the curre nt.8运算放大器最初是作为模拟计算机的一个基本构成算元出现的，由于它被用数学运算，所以被称为运算放大器。
The operati onal amplifier circuit existed initially came into existence firstly as a basic building block of analog computers. It was referred as operational because it was used to compleme nt mathematical operati ons.9、电感是在一个磁性或非磁性材料的磁芯上绕制一卷线圈构成。
An in ductor is composed of a coil of wires woun ded around a core whose material maybe magn etic or nonmagn etic.10、变压器由两个线圈恰当安放而成的，一个线圈所产生的变化磁通将连接至另一个线圈。
A transformer is constructed of two coils placed so that charging flux developed by one will li nk the other. 三、英译汉（5-6个，共30分，1 个课外）1、Electrical personnel use many differe nt types of measuri ng instruments.Some jobs require very accurate measurements while other jobs n eed only rough estimates. Some in strume nts are used solely to determine whether or not a circuit is complete.电子技术人员使用许多不同类型的测量仪器。
一些工作需要精确的测量而另一些工作只需粗略估计。
有些仪器仅仅被用来确定确定电路是否完整。
2、The importance of never allowing the actual value to exceed the maximum value indicated on the meter can not be overemphasized. 不允许被测的实际数值超过仪表最大允许值的要求再强调也不过分。
3、Since the heat sinks for both stud-m oun ted and hockey puck devices can also carry the electric current，they must be electrically isolated from their mecha ni cal moun ti ngs.由于栓接式和冰球式器件的散热器都能传递电流，它们必须与机械托电气绝缘。
4、I f the entire system is good, every acoustic variation of the air will be recorded on the disk and,when the record is played back through a similar system and the sig nal reradiated as sound energy by a loudspeaker,the result ing sound should faithfully reproduce the origi nal music.如果整个系统正常，每一次声波振动都会记录在圆盘上，并且当该记录通过类似的系统重放，信号以声能的形式从扬声器辐射出来，所产生的声音能如实地重现原始音乐。
5、I n formatio n can be com muni cate in digital from if the message is capable of being defined by a series of yes/no stateme nts.Thereca n be only two states of each variable used in conveying the in formatio n.如果信息能被一系列的YES/NO所定义，信息就能以数字形式确定。
每个变量只可能有两种状态在传送信息方面使用。
6、M ost early discoveries related to electrical machinery operation dealt with direct-curre nt systems.Alternati ng-curre nt(AC)powe r gen eratio n and distributi on became widespread a short time later.大多数早期的发明都与处理直流电系统的电机操作有关。