backing pump
短語詞組
- backing g pump 前級泵;預(yù)抽真空泵
- backing vacuum pump 前級真空泵
- high -backing pressure pump 高背後壓力泵
- forepump backing pump 預(yù)抽泵
- vacuum backing pump 真空鏇轉(zhuǎn)泵
- backing pump forepump 預(yù)抽泵
- mechanical backing pump 前級機(jī)械泵
- backing pump for molecular pump 分子泵的前級泵 返回 backing pump