对材料硬度、硬化层深度、晶粒大小、极限强度等主要采用电磁检测和超声检测。
Electromagnetic testing and ultrasonic testing are the main points for materials hardness, hardness depth, crystallite size, limiting intensity etc.
该方法考虑了材料硬度对疲劳极限的影响，使半轴杆径设计随热处理方法不同而有所差异。
The method has considered the effect of difference in material hardness on the fatigue limit, which causes the shaft diameter design to become different depending on heat treatment difference.
由实验的结果来看，极限碳酸盐硬度法简便、捷、现性好，可信度高。
The results of the experiment sh ow that the limited carbonate hardness method is simple, quick and effective.
它不仅达到所需的耐火极限，而且还具备相当高的机械强度，与楼层水泥板的硬度相差无几。
It not only achieve the required fire resistance, but also has very high mechanical strength, and hardness of cement board floor is almost the same.
极限电流密度的增大使阴极过电位增大，从而提高合金的形核速率，使沉积层晶粒的尺寸减小、显微硬度升高。
At the same time, the increase of over-potential results in the nucleating rate and the micro-hardness of deposits increasing, while the grain size deposits decreasing.
极限电流密度的增大使阴极过电位增大，从而提高合金的形核速率，使沉积层晶粒的尺寸减小、显微硬度升高。
At the same time, the increase of over-potential results in the nucleating rate and the micro-hardness of deposits increasing, while the grain size deposits decreasing.
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