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三相电怎么接220_家居日记
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三相电怎么接220

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三相电怎么接220 三相电中，是有三根火线的，每两根火线间的电压是380伏特，要是火线与火线组合，是无法达不到220伏特的要求。这时只能选择其中一条火线，然后与


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