microstructure analysis短语¹⁴⁴⁹⁷²⁺² 基本例句 显微组织分析 The fracture reason of reducer shaft was analyzed by means of morphology and microstructure analysis, chemical composition analysis, mechanical properties test, SEM micro- morphology analysis. 采用宏微观形貌分析、化学成分分析、力学性能测试、 SEM微观形貌分析等手段，分析了减速机轴断裂的原因。 dictall