before and after pump

进出口行业词汇英语翻译(B) ... beewax 蜂腊 before and after pump 备用泵 Befre 朋发立牌手表 ...

... 前后比 forward to back ratio;front to back ratio 前后泵 n. before and after pump 前后地 backwards and forwards ...

航海及海运专业词汇英语翻译(B) ... before and after pump 备用泵 before and after pump 待机备用泵 ...