It shows that the lubricant with nano-Cu additive can improve the lubricating performance and reduce wear.
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。
2
The effects of little of lubricant in CO_2 on the performance of compressor, expander gas-cooler and evaporator were analyzed, and the model of supercritical heat transfer was also proposed.