gas lift unit

例句：

1. 1. The gas lift unit is usedto lift heavy objects from the ground.
   气举单元用于从地面提升重物。
2. 2. Thegas lift unit was designed to improve efficiencyin lifting operations.
   气举单元被设计用来提高升降作业的效率。
3. 3. The gaslift unit is a crucialcomponent of the elevator system.
   气举单元是电梯系统的关键环节。