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单相和三相是什么意思_家居日记
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单相和三相是什么意思

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单相和三相是什么意思 单相也就是说只有一根火线，还有一个零线，相线零线之间的电压是220伏。而出现在家庭用电当中三相电源有A、B、C3相，电压值达到了380伏，


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