A.0.1mm/1000mm B.0.5mm/1000mm C.0.05mm/1000mm D.0.3mm/1000mm
A.寬帶振動 B.窄帶振動 C.周期振動 D.非周期振動
A.轉(zhuǎn)子匝數(shù)偏多 B.定子匝數(shù)偏少 C.定子匝數(shù)偏多 D.轉(zhuǎn)子匝數(shù)偏少