The analysis of fracture failure for electro-motor shaft was explored with the chemical analysis, macroanalysis, microanalysis and metallographical inspection method.
采用化学分析、宏观分析、微观分析和金相检测手段，对电机轴断裂原因进行了探讨。
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The sulfur occurrence, content and genetic feature in the main coal seams, Buya Coal Mine, are analyzed with the macroanalysis, microanalysis and coal chemical methods.
Reasons of failure in cooling pipe of the reactor have been studied by the chemical composition analysis, optical microscopy examination and electron probe microanalysis.