同步电机转速等于60倍的�率除以极对数,那为什么转速单位是转每分,�率单位却是赫兹? 知乎 Template




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tomski同步电机转速等于60倍的�率除以极对数,那为什么转速单位是转每分,�率单位却是赫兹? 知乎 coloring