booster pumpfore pumpfront-mounted pumpprepumproughing pump前置: prepose; preposition; pre-泵: pump前置泵,預(yù)抽亨: forepump前置泵,增壓泵: boosterpump前置泵閥: forepumvalue下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯