机械真空泵 meaning in English
mechanical pump
mechanical vacuum pump
Examples
- Mechanical vacuum pumps of oil free and its application
无油机械真空泵及其应用 - The series h ? 2h ? h3 rotary piston vacuum pump is a sort of vacuum pro - duction equipment suitable for pumping ordinary gase and condensable gases ( when a gas ballast used )
H3型系列滑阀式机械真空泵是抽除一般性气体或含有少量可凝性气体（此时应使用气镇）的真空获得设备之一。