A.定子磁極數(shù)B.轉(zhuǎn)子磁極數(shù)C.定轉(zhuǎn)子磁極數(shù)D.定轉(zhuǎn)子磁場大小
A.與定子磁極數(shù)始終保持一致B.與定子磁極數(shù)不一定相同C.比定子磁極數(shù)小D.比定子磁極數(shù)多