hole forming pin

例句：

1. 1.The engineer used a hole-forming pin to make the hole in the wall.
   工程师使用一个钻孔定位销在墙上打孔。
2. 2.The hole-forming pin was inserted into the drill bit to ensure it aligned properly.
   钻孔定位销被插入钻头以确保其正确对齐。
3. 3. The hole-forming pin was removed from the drill bit before starting the next cut.
   钻孔定位销在开始下一个切割之前从钻头中取出。