基本解释[物理学]前级真空泵英汉例句双语例句This Model Vacuum Pump can be used along, or as the backing pump of the other kinds of pumps, such as booster pump, diffusion pump, molecular pump etc.它可以单独使用， 管道泵也可作为增压泵、扩散泵、分子泵的前级泵使用。backing vacuum pump更多例句词组短语短语vacuum backing pump 真空旋转泵backing vacuum pump更多词组专业释义物理学前级真空泵