Use no oil vacuum pump, avoid polluting the environment in the production.

使用无油真空泵，避免污染环境的生产。

youdao

Field application shows that an immersible pump method is the most ideal method for the oil vacuum unloading system of rail tank wag.

实践表明，卸槽潜油泵法是火车槽车负压卸油系统改造的最理想方法。

youdao

In many developed countries, such as America, Japan, conventional oil vacuum pump has been replaced by dry screw vacuum pump in more and more fields.

在欧美和日本等发达国家，螺杆型干式真空泵在很多领域已经越来越多的代替了传统的有油泵。

youdao

Because of the oil-rich bran layer, it spoils quickly if not refrigerated or stored in vacuum-sealed bags.

VOA: standard.2010.06.25

As I understand it, the dome now sits several hundred yards away from the active well, as they seek solutions for dealing with the hydrates that have formed inside the containment dome that have made what they had hoped would be something that could cap and vacuum the oil, make it -- that that would be successful.

WHITEHOUSE: 5/10/10: White House Press Briefing

Six months later Ecuadorians elected Correa, who, among other things, has busied himself trying to vacuum up the "windfall profits" of the remaining private oil operations.

FORBES: Chavistas in Quito

Both involve heating organic materials in a vacuum until they break down into carbon and vapors that can be condensed into a low-grade fuel oil.

FORBES: KissyKat And The Magic Diesel