pneumatic pumping unit

例句：

1. 1.The pneumatic pumping unit is used to extract oil from the ground.
   气动泵机组用于从地下提取石油。
2. 2. The pneumatic pumping unit was designed to be compact and efficient.
   气动泵机组设计为紧凑高效。
3. 3. The pneumatic pumping unit is essential for maintaining pipeline pressure.
   气动泵机组对于保持管道压力至关重要。