Time relay is a use of electromagnetic principle or mechanical theory to realize delay control control electric appliance.
时间继电器是一种利用电磁原理或机械原理实现延时控制的控制电器。
Time relay is a use of electromagnetic principle or mechanical theory to realize delay control control electric appliance.
时间继电器是一种利用电磁原理或机械原理实现延时控制的控制电器。
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