计时器全名为时间延迟继电器(time delay relay),简称计时器(timer),是一种定时装置,能使控制电路于所设定的时间动作,是工业自动控制上不可或缺的元件.
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时间延迟继电器，电连接到电机和电源开关。
A time delay relay is electrically connected to the motor and the power switch.
时间延迟继电器配置提供一个机械控制的时间延迟到软启动马达。
The time delay relay is configured to provide a mechanically controlled time delay to soft start the motor.
依据信号必须通过的继电器数量的不同，路径长度(从而，相位延迟)也发生变化。
The path length (and therefore, the phase delay) varies, depending on the number of relays that the signal must go through.
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