self-centering punch

例句：

1. 1. This self-centering punch is perfect for precision cutting.
   这种自对准冲孔机非常适合精密切割。
2. 2. The engineer used the self-centering punch to make the holes perfectly round.
   工程师使用自对准冲孔机制作出完美的圆孔。
3. 3.The self-centering punch was a game-changer in the manufacturing process.
   自对准冲孔机在制造过程中是一个革命性的改变。