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单联双控开关什么意思_家居日记
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单联双控开关什么意思

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单联双控开关什么意思 顾名思义，这种开关就是通过两个单刀双掷开关来控制电路。两个单刀双掷开关上面分别有三个用来连接电线的接口，与一个刀和两个触点相连接，再将其进


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