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come in discrete pulse

Chinese translation: 为离散脉冲

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07:42 Jun 3, 2011

English to Chinese translations [PRO]
Tech/Engineering - Mechanics / Mech Engineering / 自动化

English term or phrase: come in discrete pulse

One type of semiconductor is the SCR (silicon controller rectifier) which will be connected to the AC line voltage. This type of device is usually employed where large amounts of power must be regulated, motor inductance is relatively high and accuracy in speed is not critical (such as constant speed devices for fans, blowers, conveyor belts). Power out of the SCR, which is available to run the motor, comes in discrete pulses. At low speeds a continuous stream of narrow pulses is required to maintain speed. If an increase in speed is desired, the SCR must be turned on to apply large pulses of instant power, and when lower speeds are desired, power is removed and a gradual coasting down in speed occurs. A good example would be when one car is towing a second car. The driver in the first car is the SCR device and the second car, which is being towed is the motor/load.

其中一类半导体是连接到交流线电压的可控硅（SCR）。这种设备通常运用在必须对大量的电力加以调节，电机电感相对较高，以及速度精度不太重要的地方（如风扇、鼓风机和传送带的恒速装置）。由可控硅输出的用以运行电机的电源为离散脉冲。在低转速时，窄脉冲连续流必须保持一定的速度。如果需要增加速度，必须打开可控硅，施加大量的瞬间脉冲电源，而当需要较低的速度时，电源被移走，速度逐步向下滑。一辆车拖着第二辆车就是一个很好的例子。第一辆汽车的驱动机是可控硅设备，而被拖走的第二辆车是马达/负载。

come in 在这儿怎么理解？是电源以什么方式运行的意思吗？

Tracy Huang KudoZ activity Questions: 15 (none open) Answers: 1 China
Local time: 22:39

Chinese translation:为离散脉冲

Explanation:
come (in)是个虚词，在这只起语法连接作用，而没有语义。比如 Shoes come in different sizes and colours（鞋子有各种尺寸和颜色）。

Selected response from:

Long Song
Local time: 22:39

Grading comment

谢谢各位的帮助。
4 KudoZ points were awarded for this answer

Summary of answers provided

4 +2

为离散脉冲

Long Song

离散脉冲(在这时候)起作用

philipchang

Discussion entries: 2

Answers

44 mins confidence:

离散脉冲(在这时候)起作用

Explanation:
discrete pulse：不連續脉冲、离散脉冲
comes in：在...中起作用
silicon controller rectifier：硅整流器控制器、可控硅
全句：用以运行电机的可控硅(的)电源输出在这时候产生离散脉冲作用。

philipchang
Local time: 22:39
Native speaker of:

English,

Chinese

1 hr confidence:

peer agreement (net): +2

为离散脉冲

Explanation:
come (in)是个虚词，在这只起语法连接作用，而没有语义。比如 Shoes come in different sizes and colours（鞋子有各种尺寸和颜色）。

Long Song
Local time: 22:39
Native speaker of: Chinese
PRO pts in category: 4

Grading comment

谢谢各位的帮助。

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come in discrete pulse

Chinese translation: 为离散脉冲

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come in discrete pulse

Chinese translation: 为离散脉冲

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KudoZ™ translation helpThe KudoZ network provides a framework for translators and others to assist each other with translations or explanations of terms and short phrases.

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