column bottoms pump

例句：

1. 1. The column bottoms pump is used to remove water fromthe ground.
   柱底泵用于从地面移除水。
2. 2. The column bottoms pump is acrucial component in the oil extraction process.
   柱底泵是石油提取过程中的关键组件。
3. 3. Thecolumn bottoms pump is designed to efficientlytransport liquids through underground pipelines.
   柱底泵设计用来通过地下管道高效地输送液体。