短語(yǔ)詞組短語(yǔ)net machine -hours [交]裝卸機(jī)械作業(yè)臺(tái)時(shí)gross machine -hours [交]裝卸機(jī)械工作臺(tái)時(shí)machine -hours at cargo work [交]裝卸機(jī)械作業(yè)臺(tái)時(shí)ratio of machine running hours 機(jī)械運(yùn)轉(zhuǎn)時(shí)間比actual machine hours 實(shí)際機(jī)器運(yùn)轉(zhuǎn)小時(shí)standard run machine hours 標(biāo)準(zhǔn)運(yùn)行機(jī)器時(shí)數(shù)machine hours rate 機(jī)器時(shí)間率 返回 machine hours