As the vacuum pressure is often said, booster pump is positive pressure pump pump.
比如常说的真空泵就是负压泵，增压泵就是正压泵。Water ring vacuum pump to the evaporator of the non-condensable gas and a small amount of vapor pumped back into the atmosphere.
水环真空泵将蒸发器的不凝性气体及少量蒸汽抽吸后排到大气中。Positive pressure air is usually provided by air compressor, and negative pressure air is usually provided by vacuum air pump.
正压力空气一般由空压机提供，负压力空气一般由真空泵提供。The system features a very quiet and reliable vacuum pump to provide adjustable flows through the tank of up to 1. 67 CFM.
吸入染毒系统装有噪声小且质量可靠的真空泵，使通过箱体的空气流量可调，其最高可达1.The tube is connected to either a hand-held vacuum pump, or to an electric vacuum, and the pregnancy is removed.
该导管或与手持真空泵联结，或与电动真空泵联结，然后移除胎儿。Inside the cabinet are an air compressor and a vacuum pump.
盒子内部是一台空气压缩机和一台真空泵。the vacuum pressure in its operations, the facility should be able to drain away the vacuum generated in the process of fully gases.
真空泵在其作业压强下，应能排走真空设施工艺内中中产生的全副气体量。The utility model relates to a rotor of a vacuum pump, a blower and a fluid conveying pump.
本实用新型涉及真空泵、鼓风机及液体输送泵的一种转子。The utility model relates to a vacuum gaining device, in particular to the improvement of a sliding valve in the sliding spool vacuum pump.
本实用新型涉及真空获得设备，特别是滑阀式真空泵中滑阀的改进。