The vacuum takes off the angry aircrew including the vacuum takes off angry machine, vacuum pump and centrifugal pump.
真空脱气机组是包括真空脱气机、真空泵和离心泵。
To power the machine, several people would turn a crank arm connected to the vacuum pump.
要操作此机器，需要几个人转动与真空泵相连的曲柄装置。
Vacuum feeder is a vacuum feeding machine by using pneumatic vacuum pump as vacuum source.
真空上料机是利用气动真空泵作为真空源的一种真空输送机。
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