positive displacement pump的用法和樣例：
例句
- Centrifugal pumps are the most common pump power.
離心泵是最常見的動力式泵。 - The Company produced all kinds of vehicles pump-pump, pump Tuobeng tubes, and other parts, construction machinery and equipment leasing.
本公司生產各種車式泵泵管，拖泵泵管，及其他零部件，並可租賃建築機械設備。 - It can help to determine the dosing capacity of the pump which is in working conditions.
在泵浦運轉時，可校正及標定定量泵浦之輸送量。
