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- 我们使用哪种润滑剂，主要取决于轴承的转速如何。
The sort of lubricant which we use depends largely on the running speed of the bearing.
- 由于是固定的支承点，死顶尖必须润滑。
The dead center, being a stationary bearing point, must be lubricated.
- 在钻机的金刚钻头旋转的时候，泥浆便进行了润滑。
As the diamond tip of the drill revolves, it is lubricated by mud.
- 你再不加些润滑油，发动机就要卡住了。
Your engine will seize up if you don't put some more oil in.
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