1. In addition,The general macrograph characters of spalling of bonding layer and shallow working lining,and their causes were described.
   总结了轧辊磨损预报模型的研究现状,并详细介绍了典型的磨损预报模型,最后展望了冷轧辊研究工作的方向。
2. 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、低倍检验、金相检验、力学试验和化学分析等方法，分析了人字齿轮轴发生劈裂的原因。

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