电气工程及其自动化英语英译汉

2021年2月22日发(作者：阈值英文)

1```In the generator mode ,it,s operating speed isslightly higger than it,s synchronous speed and ie

needs magnetizing revctive pover form the symtem that it is connected to in order to suuply pover .

在发电方式下他的工作速度比同步转 速稍高些，

并了解供电力，

他需要他所连接的系统吸收

磁化无功功率。

2```in

the

barking

mode

of

operyetion

,a

three

–

phase

indection

motor

running

at

a

steady

–

speedcan be brought to a quick stop by interchanging two of stator leads

感应电机运行电动状态时，

其转速低于同步转速，

运行在发电状态时，

其转速高于同步转速，

这就需要从与之间相连的系统电源提供励磁的无功功率。

3```obviously

,dc

machine

applications

are

very

significant,but

the

advantages

of

the

dc

machinemmust

be weighed against its greatr initial

investment cost and the maintenance

problems associated with its brush-commutator system..

同步是指状态运行时点击以恒定的转速和频率运行。

4```with

a

cylindyical

rotor

the reluctance

of

the magnetic circuit

of

the

field

is

independent

of

itsactual diretion and relative to the direct axis.

圆柱形转子的磁场磁路的磁阻与直轴有关，而与磁场的实际 方向无关。

5```obviously,

dc

machine

applications

are

very

significant

,but

the

advantages

of

the

dc

machine

must

be

weighed

against

its

greatr

initial

investment

cost

and

the

maintenance

probiems associatal with its brush-commutator system.

< p>
显然，直流电机的应用非常有意义，但是也纯在初期成本投入提高、有电刷

-

换向器而来的

维修困难，应用是一定要权衡其利弊。

6```the

transfer

function

consists

of

two

parts

.one

part

is

the

size

relationship

between

the

inputand the output .

一个元件的传递函数描述了和输出大小的实际关系。

7```feedback

is

the

action

of

measuring

the

difference

between

the

actual

result

and

the

desired

result, and using that difference to drive the actual result toward the desired result .

反馈就是测量实际结果之差，并且这个差去控制实际结果，达到期望的值。

8```repeatability

is

the

maximum

difference

between

several

consecutive

outputs

for

the

same

input when approached from the same direction

in full-range traversals .

重复查就超出相同的输入在下一阶 段有的范围内重同一个方向接近的连续之间的最大之差。

9```repeatability

and

reproducibility

deal

in

slightly

are

different

ways

with

the

degree

of

closenessamong

repeated measurements of the same value of the measured variable

重复性和在现性一大同小异的方式论述被测量在同一个值得重 复测量中的接近程度。

二、英译汉

1. A

controller has two interfaces with the process it controls

: one is the input to the controller ,

the other is the output from the controller.

一个控制器在 它控制过程中有两个界面过程，一个是控制输入，另一个是输出。

2. Mechanical switches use one or more pairs of contacts to make or break an electric circuit.

机械开关用一对或多对触电接通或断开电路。

3. Overload switches are intended to protect motors and other equipment from damage caused by

an overload condition.

过节开关试图保护电动机过其它设备免 受过节条件引起的其他伤害。

4. Normally open contacts are designated by a pair of parallel lines.

常开触电用一对平行线表示。

5. The relay is actuated (or energized) by completing the circuit branch that contains the relay coil.

通过接通继电器线圈所在的分支电路激励继电器。

6. A

controller has two interfaces with the process it controls: one is the input to the controller, the

other is the output from the controller.

控制器与它所控制的过程有两个接口，一个是加到控制器的输 入，另一个是来自于控制器

的输出。

7.

Normally

closed contacts

are

designated

by

patallel

lines

with

a

diagonal

connecting

the

two

parallel lines.

常闭触点用两根平行线和连到这两根平行线上的斜线表示。

8. In a time

–

delay relay ,the delay occurs in the direction in which the arrow is pointing.

在延时继电器中，按箭头所指的方向延时。

9. A

normally closed contact will open the circuit path when the relay coil is energized and will

close the circuit path when the relay coil is

deenergized

当继电器线圈通电时，

常闭触点断开电路通道，

若继电器线圈断电，

常闭触 点将接通电路通

道。

10. The

three heavy contacts are used to switch the three lines supplying electric power to the

load. The two light contacts are used in the control circuit.

< br>三个重的触点用于三相电网与负载间的通断，两个轻的触点用在控制电路中。

SCR can be turned ON by a short pulse of control current into the gate and it

remains ON

as long as current is flowing from the anode to the cathode.

通过在可控硅整流器的门极施加一短脉冲的控制电流就可以使其导通，

< br>并且只要有电流从其

阳极，可控硅整流器就一直导通。

12. The device is fully on and approximates a closed switch when the gate-source voltage is above

the threshold value, UGS (t h).

当栅源电压高于值时，器件完全导通近似为一个闭合开关。

13. Because their on-state resistance has a positive temperature coefficient, MOSFET s are easily

paralleled.

因为

MOSFET

的通态电阻具有正的温度系，所以它属于并联。

14. The GTO switching speeds are in the range of a few microseconds to 25 us.

GTO

开关速度在几毫秒到

25

微妙之间。

15. The GTO is used when a switch is needed for high voltages and large currents in a switching

frequency range of a few hundred hertz to 10 KHz.

当需要高压大电流的开关，并且开关频率在几十

Hz

到

10 KHz

范围内时使用

GTO

。

16. The IGBTs have some of the advantages of the MOSFET .

IGBT

具有

MO SFET

组合的优点。

IGBT has a high impedance gate ,which requires only a small amount of energy to switch

the device .

IGBT

具有很高的栅极阻抗这就使

TGBT

开关时需要很少的能量。

18.

Like

the

IGBT

has

a

small

on-state

voltage

even

in

devices

with

large

blocking

voltage

ratings.

类似于

BJT

、

IGBT

有很小的工作电压。即使在器件具有很高的阻断电压额定值时。

19.

Several types of semiconductor power devices including

BJT s, MOSFET s , GTO

s, and

IGBT s can be the device .

包括

BJT , MOSFET , GTO, and IGBT

几个半导体电力器件。可以通过加到器件控制端的控

制信号导通关断。