pneumatic grinding machine

例句：

1. 1.This pneumatic grinding machine is very efficient in cutting metals.
   这台气动研磨机在切割金属方面非常高效。
2. 2.The pneumatic grinding machine is widely used in the manufacturing industry.
   气动研磨机在制造业中被广泛使用。
3. 3.The pneumatic grinding machine can be operated by a single operator, saving labor costs.
   气动研磨机可以由一名操作员操作，节省了劳动力成本。