metallographic analysis短语¹⁴⁴⁹⁷²⁺² 基本例句 金相分析 The single-sided fish defects of KFC copper alloys applied to lead frame produced by domestic corporation were studied and analyzed by energy spectrum analysis, SEM and metallographic analysis. 对国内某企业采用半连续铸造生产的 KFC引线框架带材表面鱼鳞状缺陷进行了分析和研究。 iciba