metallographical

1·Exothermic efficiency, metallographical structure and transition region of coating layer were also investigated.

还研究了放热效应，金相组织与涂层过渡层。

2·In this paper, we introduce the principle of metallographical cutter control system and the design method of software and hardware based on the AT89S52 singal-chip microcomputer.

介绍了以AT 89s52单片机为核心的金相切割机控制系统原理和软硬件设计方法。

3·Via vacuum induction furnace and metallographical analysis, the effects of RE on the grain size of the austenite and distance of the pearlite laminae of high-carbon steel for heavy rail were studied.

通过真空感应炉模拟实验，结合金相分析，研究稀土对于高碳重轨钢奥氏体晶粒尺寸和珠光体片层间距等的影响作用。

4·Pearlite spheroidization is irregular changing of metallographical image and has the features of fractal, so it can be described by technique of fractal.

珠光体球化反映到金相上，是一种不规则图像的变化，并且具有分形的特征，可望用分形几何的方法来进行描述。

5·No abnormity was found in the metallographical analysis and hardness test.

金相和硬度分析未发现明显异常组织和硬度分布。