duplex steam pump

例句：

1. 1. Theduplex steam pump is used to pumpwater from the underground aquifer.
   双联式蒸汽泵用于从地下含水层抽取水。
2. 2. The engineer designed theduplex steam pump to meet the highpressure requirements of the process.
   工程师设计了双联式蒸汽泵以满足工艺的高压力要求。
3. 3. The duplex steam pump wasinstalled in the factory's main productionline to improve efficiency.
   在工厂的主要生产线上安装了双联式蒸汽泵以提高效率。