系统研究了两种气阀钢的常规力学性能、抗氧化性能和耐磨性能，并分析了气阀钢的强化机理、抗氧化机理和磨损机制。
The mechanical properties, oxidation resistance and wear resistance of two valve steels were systematically studied, and the concerned mechanisms were also analyzed.
最后结合磨损机制的基础理论，探讨了不同复合材料的磨损机理。
At last, the wear mechanism of the composites was studied refer to the basic theory of wear.
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