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220v转380v怎么弄_家居日记
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220v转380v怎么弄

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220v转380v怎么弄 依具体用途来定，如果转换电压仅为驱动电机，就将电机改成三角接法就行；如果转换电压来驱动电阻，可将升压器放大两倍来实现；还是不行，只能使


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