metallographic test

基本解释

The whole set of photos are a profuse addition to the current metallographic test photos, and it has momentous practical significance.
该整套图谱对现有的金相检测图谱是一个非常丰富的补充，具有重要的实用意义。
The concept and grading method of the"martensitic grade"in the standard of《Metallographic Test for Carburizing Auto Gear》were analyzed and discussed according to the experience and test results.
通过生产中的试验例证和检验结果，针对《汽车渗碳齿轮金相检验》标准中“马氏体级别”的概念和评级方法进行了分析和讨论。
It was approved by metallographic test that the sound velocity measured by the instrument was more accurate. The instrument was easy for operation and could be used to realize automatic control.
用该仪器进行现场检测并通过金相试验对比，试验证明，用球化率测定仪比用测厚仪和探伤仪测得的声速值要精确，而且操作简单，可实现全过程自动控制。