A.60 B.50 C.40 D.35
A.水泵出水口直徑 B.水泵吸水口 C.水泵比轉(zhuǎn)數(shù)為280
A.比轉(zhuǎn)數(shù) B.性能參數(shù) C.水泵轉(zhuǎn)數(shù) D.比轉(zhuǎn)數(shù)和水泵轉(zhuǎn)數(shù)