fracture surface examination的意思|示意

The importance of examination of surface fatigue cracks in automobile repair is stated in this paper, and the features of fatigue fracture are briefly analysed.

论述了表面疲劳裂纹检测在汽车修理中的重要地位，简单分析了疲劳断口的特征，重点讨论了汽车零件表面疲劳裂纹的发生规律及其常见部位。

The fracture mode and cause were analyzed and determined by fracture surface observation, metallurgical structure examination, chemical analysis and hardness testing.

通过断口宏微观观察、金相组织检查、化学成分及硬度检测等手段确定了叶片断裂性质和原因。