beam pumping unit

例句：

1. 1. The beam pumping unitis used to extract oil from the ground.
   光束泵机组用于从地下提取石油。
2. 2.The beam pumping unit has been upgraded to improve its efficiency.
   光束泵机组已经升级以提高其效率。
3. 3. Thebeam pumping unit isa crucial component in the oilextraction process.
   光束泵机组是石油开采过程中的一个关键组件。