“电机变极调速”的概念、定义、翻译、参考文献-科学参考

单词	电机变极调速
释义	电机变极调速 Encyclopedia 工学〔电机驱动方式〕释 motor pole changing speed regulation电机变极调速异步电机绕组极数变换从而改变同步转速进行调速的方式。
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