润滑作用 [机] lubrication action
- 在金属的润滑作用中存在两个不同区段:边界和流体区。
In metal lubrication two distinct regions are recognized: boundary and hydrodynamic. - 特别添加固体润滑剂,在高温和冲击负荷下能起到润滑作用。
Added with special solid lubricant, providing lubrication under high temperature and shock load. - 陆上动物的唾液内有粘液,并对消化道内的食物起着润滑作用。
In land animals, saliva contains mucus , and provides lubrication for food in the alimentary canal.
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