pneumatic pusher

例句：

1. 1. The pneumatic pusheris used to propel objects through air.
   气动推进器用于通过空气推动物体。
2. 2. Thepneumatic pusher was designedto be lightweight and efficient.
   气动推进器设计为轻便且高效。
3. 3. The pneumatic pusherhas become a popular choice formany industrial applications.
   气动推进器已成为许多工业应用的热门选择。