In addition,The general macrograph characters of spalling of bonding layer and shallow working lining,and their causes were described.

总结磨损预报模型的研究现状,并详细介绍典型的磨损预报模型,最展望冷研究工作的方向。

The failure of a gear shaft was analyzed by SEM analysis, macrograph, metallographical examination, mechanical test, chemical analysis and etc.

摘要采用扫描电镜、低倍、金相、学试和化学分析等方法，分析人字齿轮轴发生劈裂的原因。