rotary expansion engine

例句：

1. 1. The rotary expansion engine isused in the oil refining processto increase the efficiency of the process.
   旋转式膨胀发动机在石油精炼过程中用于提高过程的效率。
2. 2. The rotary expansion engine isa type of mechanical device that uses theprinciple of rotation to achieve expansion.
   旋转式膨胀发动机是一种利用旋转原理实现膨胀的机械装置。
3. 3. The rotary expansion engine iswidely used in various industries, such aschemical engineering and power generation.
   旋转式膨胀发动机广泛应用于化工、发电等行业。