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

1.总结轧辊磨损预报模型研究现状,并详细典型磨损预报模型,最展望冷轧辊研究工作。

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

2.摘要采用扫描电镜、低倍检验、金相检验、力学试验和化学分析等法，分析人字齿轮轴发生劈裂原因。