roots pump

There are many kinds of rotor profiles for roots vacuum pump.

罗茨真空泵的转子型线有很多种.

The characteristics of overflow valve Roots pump and ways of testing the overflow valve differential pressure are introduced. And it is pointed out that the overflow valve differential pressure of overflow valve Roots pump should be examined in test procedure.

介绍了带溢流阀罗茨泵的特点和溢流阀压差的试验方法，明确提出应对带溢流阀罗茨泵考核溢流阀压差。

LS series wet roots vacuum pump is a rough vacuum pumping equipment.

LS型直排大气湿式罗茨真空泵属粗真空获得设备.

At present, the domestic air-cooled vertical Roots pump progressed very quickly and technically mature.

目前, 国内气冷式直排大气罗茨泵进展很快,技术上已经成熟.

The series ZJY Roots pumps can be used asboosters combined with backing pump.

该系列罗茨泵原可作为增压泵使用,但不能直接地把气体排到大气中去.