metallographic examination
金相断面磨片
optical metallographic examination.
光学金相检验
Surface crack on teeth clamp was studied by means of macroscopic and metallographic examination.
采用外观和金相检验等方法对牙钳表面裂纹进行了分析。
Metallographic examination of borided 45 steel sample was made by transmission electron microscopy.
用透射电子显微镜对经渗硼得45钢作了观察。
The failed keyway broach was analysed by chemical analysis, hardness testing and metallographic examination.
对断裂单键拉刀进行了化学成分分析，硬度测定和金相检验。
Examination of Metallographic Composition and Analysis of Distortion Causes for Heat Emission Pipe in Cylindrical Furnace
圆筒形加热炉热辐射管金相组织检测及弯曲变形原因分析
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