self-aligning centring roll

例句：

1. 1. The machine used a self-aligning centre roll to ensure accurate cutting.
   这台机器使用了自对准中心辊以确保精确切割。
2. 2. The self-aligning centre roll was designed to minimize the amount of material waste.
   自对准中心辊的设计旨在最小化材料浪费。
3. 3. The self-aligning centre roll is an essential tool for precision machining.
   自对准中心辊是精密加工中不可或缺的工具。