duplex power pump

例句：

1. 1. The duplex power pump is used to pump water from the well.
   双联泵用于从井中抽水。
2. 2. The duplex power pump is an essential tool for maintaining clean water supplies.
   双联泵是保持清洁水源的重要工具。
3. 3. The duplex power pump has been designed to be more efficient and cost-effective.
   双联泵已被设计得更加高效和成本效益。