预防性使用能及时保护发动机，这是由于磨损降低和润滑性改善，以减少机械损伤。
Precautious use can protect the engine in time from mechanical damage due to reduction of wear and tear and improvement in lubrication.
试验结果表明：纳米铜添加剂可以有效地提高润滑性能，减小喷油泵的磨损。
It shows that the lubricant with nano-Cu additive can improve the lubricating performance and reduce wear.
水轮机导轴承的润滑性能直接关系着整个机组轴系的磨损与振动问题。
The guide bearing lubrication performance of hydropower sets is directly relative to the problems of shafting abrasion and vibration.
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