Variable magnetic pole DC motor can resolve the problem of commutator existing in the traditional DC motor.
变磁极性直流电机解决了传统直流电机的换向器问题。
Discussed the switch directions control of the variable pole about DC motor.
阐述了变磁极性直流电机的极性换向控制。
Discussed the switch directions control of the variable pole about DC motor.
阐述了变磁极性直流电机的极性换向控制。
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