duplex pump的用法和樣例：
例句
- Install a ground cable on the triplex pump motor.
給三抽缸泵馬達安裝接地線。 - 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。
