罗茨真空泵 meaning in English

roots pump
root’s vacuum pump

Air and gas blowers , compressors , nox control systems , silencers , dampers , and expansion joints
-生产罗茨鼓风机，罗茨真空泵和风机配套件。
Vacuum technology ; acceptance specifications for roots vacuum pumps for the range of medium vacuum
真空技术.中等级真空范围用罗茨真空泵的验收规范
Provides gas compression solution for the oil and gas industry with products ranging from compressors and turbines to pumps , valves , gas meters , fuel dispensers
-生产经营水环真空泵及压缩机旋片真空泵往复真空泵罗茨真空泵真空机组及真空干燥等。