在电动机里电流是由外电源供给的感生电动势的方向和电枢电流i方向相反。
Years in the motor current is outside the power supply from the induced electromotive force and the direction of armature current I in opposite directions.
在电动机里电流是由外电源供给的感生电动势的方向和电枢电流i方向相反。
Years in the motor current is outside the power supply from the induced electromotive force and the direction of armature current I in opposite directions.
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