A、周轉(zhuǎn)系數(shù):2/周轉(zhuǎn)時(shí)間(次/小時(shí))=60/周轉(zhuǎn)時(shí)間(次/分)
B、周轉(zhuǎn)系數(shù):1/周轉(zhuǎn)時(shí)間(次/小時(shí))=60/周轉(zhuǎn)時(shí)間(次/分)
C、周轉(zhuǎn)系數(shù):1/周轉(zhuǎn)時(shí)間(次/小時(shí))=120/周轉(zhuǎn)時(shí)間(次/分)
D、周轉(zhuǎn)系數(shù):2/周轉(zhuǎn)時(shí)間(次/小時(shí))=120/周轉(zhuǎn)時(shí)間(次/分)