Inspect bearing lubrication if the oil level is in normal level.
检查轴承是否有油，滑动轴承应检查是否达到规定油位。
Therefore, we should not lubrication oil heater is right choice.
因此，应正确选择油加热器。
B-contained cutting oil has been synthesized and its lubrication property was also investigated.
合成了含硼切削油，并考察了它的润滑性能。
One of the most important properties of a metal working oil is not lubrication but?
金属加工液特性中除了润滑性之外，还有一个最重要的特性是什么？
One of the most important properties of a metal working oil is not lubrication but?
金属加工液特性中除了润滑性之外，还有一个最重要的特性是什么？
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