电动机顺序控制的接线规律是:要求接触器 KM1 动作后接触器 KM2 才能动作,接触器 KM1 的辅助触头__________ 接触器 KM2 的线圈电路中:要求接触器 KM1 动作后接触器 KM2 不能动作,接触器 KM1 的__________ 串接于接触器 KM2 的线圈线路中。
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