Centrifugal pumps are the most common pump power. 离心泵是最常见的动力式泵。
The Company produced all kinds of vehicles pump-pump, pump Tuobeng tubes, and other parts, construction machinery and equipment leasing. 本公司生产各种车式泵泵管，拖泵泵管，及其他零部件，并可租赁建筑机械设备。
Typically the vacuum is generated by a water aspirator or a membrane pump. 真空由水抽子或隔膜泵产生。
