grease gate

例句：

1. 1. The grease gate is a crucial component of the oil system.
   油系统的关键部件是黄油门。
2. 2. The grease gate prevents oil from leaking into the engine.
   黄油门防止机油泄漏到发动机中。
3. 3.The grease gate was designed to ensure proper oil flow and prevent damage to the engine.
   黄油门的设计是为了确保适当的机油流动并防止对发动机的损害。