divided crankcase

例句：

1. 1. Thecar's engine is divided into severalparts for easy maintenance.
   这辆车的发动机被分成几个部分，便于维护。
2. 2. The mechaniccarefully removed the divided crankcase toinspect the internal components.
   机械师小心翼翼地拆开了分体曲柄箱，以检查内部组件。
3. 3. The division of labor has beena topic of discussion in recent years.
   分工问题近年来一直是讨论的焦点。