rocker arm oil trough

例句：

1. 1. The car's engine has a rocker arm oil trough for lubricating the moving parts.
   这辆车的引擎有一个摇臂油槽，用于润滑移动部件。
2. 2.The engineer used a rocker arm oil trough to lubricate the gears.
   工程师使用一个摇臂油槽来润滑齿轮。
3. 3.The maintenance technician replaced the rocker arm oil trough with a new one.
   维护技术人员用一个新的摇臂油槽替换了旧的。