backing pump
短语词组
- backing g pump 前级泵;预抽真空泵
- backing vacuum pump 前级真空泵
- high -backing pressure pump 高背后压力泵
- forepump backing pump 预抽泵
- vacuum backing pump 真空旋转泵
- backing pump forepump 预抽泵
- mechanical backing pump 前级机械泵
- backing pump for molecular pump 分子泵的前级泵 返回 backing pump