horizontal oil groove

例句：

1. 1.The horizontal oil groove is crucial for the smooth operation of the machine.
   水平油槽对于机器的顺畅运行至关重要。
2. 2.The engineer carefully designed the horizontal oil groove to ensure optimal efficiency.
   工程师仔细设计了水平油槽，以确保效率最优。
3. 3.During maintenance, the technicians had to clean and maintain the horizontal oil grooves on the engine.
   在维护期间，技术人员必须清理并保养发动机上的水平油槽。