percussion drill

例句：

1. 1. The engineer used a percussiondrill to remove the old paint from thewall.
   工程师使用敲击钻来去除墙上的旧漆。
2. 2. During the construction phase,percussion drills were used tobreak through concrete.
   在施工阶段，敲击钻被用来打破混凝土。
3. 3. Thepercussion drill wasan essential tool for the constructioncrew during the demolition process.
   敲击钻是建筑工人在拆除过程中必不可少的工具。