penetrator ram

例句：

1. 1. The machine is used to penetrate the material for welding.
   这台机器用于穿透材料进行焊接。
2. 2. The penetrator ram is a crucial tool in metalworking.
   穿孔器是金属加工中至关重要的工具。
3. 3. During the construction process, the penetrator ram was used to drill holes in the concrete wall.
   在施工过程中，穿孔器被用来在混凝土墙上钻孔。