采用宏观检查、扫描电镜、X射线能谱、金相分析及化学分析等方法，对金属波纹膨胀节开裂的原因进行了分析。
By using visual examination, scanning electronic microscope, X-ray energy spectrum and metallurgy and chemical analysis, the cause of crack occurred in bellow expansion joint was analyzed.
采用金相分析和化学成分分析方法，对弹性压簧在性能测试时出现断裂进行了分析。
Uses the metallography analysis and the chemical composition analysis method, presses the reed to the elasticity when the performance test appeared the break to carry on the analysis.
采用化学分析、金相分析以及扫描电镜分析等试验方法对某减震器连杆断口进行了分析。
The fracture of Piston rod of the absorber was analyzed by means of chemical composition analysis, microstructure examination and the scanning electron microscope (SEM).
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