变磁极性直流电机解决了传统直流电机的换向器问题。

Variable magnetic pole DC motor can resolve the problem of commutator existing in the traditional DC motor.

youdao

变磁极性直流电机解决了传统直流电机的换向器问题。

Variable magnetic pole DC motor can resolve the problem of commutator existing in the traditional DC motor.

youdao