mill coil

例句：

1. 1. The mill coil is used to grind the grain into flour.
   轧辊用于将谷物磨成面粉。
2. 2. The engineer designed a new mill coil that could handle more material.
   工程师设计了一种新型的轧辊，可以处理更多的物料。
3. 3. The mill coil was damaged during the construction of the new factory.
   新工厂的建设过程中，轧辊受损了。