AC lubricating-oil pump

例句：

1. 1.The AC lubricating-oil pump is essential for maintaining the engine's smooth operation.
   自动润滑油泵对于保持发动机的顺畅运行至关重要。
2. 2. The engineer replaced the old AC lubricating-oil pump with a new one.
   工程师用一个新的代替了旧的自动润滑油泵。
3. 3.During maintenance, the technician checked the AC lubricating-oil pump to ensure it was functioning properly.
   在维护期间，技术人员检查了自动润滑油泵以确保其正常工作。