A.電刷數(shù)=電機(jī)極對數(shù)B.支路數(shù)=電刷數(shù)=電機(jī)極數(shù)C.支路對數(shù)=電刷數(shù)=電機(jī)極數(shù)D.支路對數(shù)=電機(jī)極對數(shù)