wet system of evacuating
（用喷水空气泵抽空的装置）湿体系抽空
neon light tube vacuum pump
霓虹灯管真空抽气泵
water ejector pump
喷水抽气泵(一种机械真空泵)
The vacuum pumps begin sucking the air from the barrel of gun.
真空泵开始抽取电子枪管里的空气。
The pump sucks air out through this valve.
这台泵通过这个阀门把空气抽出.
a suction pump used to create a partial vacuum.
用于使局部真空的抽吸泵。
Research on Vacuum Pump of Three Function: "Pumping-Breaking-Transporting";
“抽吸－破碎－输送”三功能真空泵的研究
The pump sucks air out (of the vessel) through this valve.
这台泵通过这个阀门把（容器中的）空气抽出.
Researching on Vapor Ejecting Pump Vacuum System for Tobacco Humidity;
烟叶回潮用蒸汽喷射泵抽真空系统的研究
main scavenging pump
主抽气泵，主排气泵
lift [suction] pump
吸取泵，吸取抽机，提水泵
It is concluded that the single suction double acting unit with balance passage is better than the double suction unit without balance passage.
得出了开平衡通道的单级抽气可以设计得比不开平衡通道的双级抽气真空泵真空度高的结论。
animal-drawn or hand-propelled cart[whether or not fitted with subsidiary pumps for filling or emptying purposes]
畜拉或手推车[不论是否装有充填或抽空用辅助泵]
When a pump is used to provide a vacuum, we consider it even more important to guard against leakage.
当泵被用来抽取真空时，我们认为尤为重要的是防止漏气。
The pump exhaust should lead to the open air or a fume hood.
抽气泵的排气管应该导向室外空旷处或导向一座通风橱。
The air portion of the filtrate is extracted from the top of the Receiver by the Vacuum Pump.
滤液中的气体部分由真空泵从接收罐的顶部抽出。
Application of frequency-modulated speed control to air-cooled large-size JZJQH2500-224 Roots vacuum pumping system
变频调速在大型气冷罗茨真空泵JZJQH2500-224抽气系统中的应用
Development of the great-flow control valve used for the vacuumpumping water system with multistage centrifugal pumps
用于多级离心泵抽真空吸水系统的大流量控制阀的开发研制