Microhardness on the surface layer were measured by microhardness testing machine.
利用显微硬度试验机来测量表面显微硬度。
Microhardness testing during aging treatment in high purity steel bearing copper was carried out.
对经时效处理后的含铜高纯钢进行了显微硬度测试。
The crack in quenching boundary of the hydraulic press plunger surface was analyzed by means of chemical composition analysis, microstructure examination and microhardness testing.
采用化学分析、金相检验和显微硬度梯度试验等方法对油压机柱塞表面淬火交界处裂纹进行了分析。
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