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- Indentation methods of hardness testing comprise two principal groups. 压痕法测定硬度包括两大类。
- This is a hard test in which the class all make low scores. 这是一次较难的测试,班上所有的学生都得了较低的分数。
- No abnormity was found in the metallographi cal 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。
- Scratch Hardness Test Using a Diamond Stylus on the Micro-Tribometer mod. 便条硬度试验用钻石笔在微摩擦国防部。
- We passed the GESE band 4 and we will welcome the new and hard test. 我通过了绿色通道英语口语4级的考试，我们还要迎接新的难的考试。
- Method of measurement uncertainty evaluation for Brinell hardness test results was introduced in the present work. 文章介绍了布氏硬度试验中测量结果的不确定度评定方法。
- Analysis was performed on the crack zone by macroscopical, microscopical and hardness testing. 采用宏、微观分析方法对断裂原因进行了分析。
- An investigation was made on brinell hardness test with a universal material testing machine. 根据布氏硬度试验的原理 ,提出一种在万能材料试验机上进行布氏硬度试验的方法。
- The failed keyway broach was analysed by chemical analysis, hardness testing and metallograph-ic 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。
- And the measured uncertainty in Vickers hardness testing was evaluated according to procedure without bias method and procedure with bias method. 利用无偏差估计方法和考虑硬度计偏差的方法对维氏硬度试验中的测量不确定度进行了评定。
- Through hard tests we are accepted in the world of work. 经过苛刻的测试终于获得了工作。
- It was found that the surface roughness is significant in Brinell hardness testing, but has little influence on Rockwell hardness. 结果表明,表面粗糙度对布氏硬度值有重要影响,而洛氏硬度值与表面粗糙度关系不大。
- The results of the hardness test prove the effect ot secondary hardening in cau- sed by forming M_(23)C_6 carbides. 高温硬度试验证明二次硬化效果是由 M_(23)C_6碳化物形成引起的。
- The characteristic of knoop hardness test method for metallic materials are introduced. 文章介绍了布氏硬度试验中测量结果的不确定度评定方法。
- The failure of the universal grinder clamps was analyzed by the macroscopic methods, microscopic examination and hardness testing. 摘要采用宏观检验、微观检验、硬度测试等方法对万能工具磨床用钳口开裂原因进行分析。
- Is hardness tested on a surface that has been ground to remove decarburization? 硬度测试是不是在磨去脱碳层的表面上进行？
- The fracture reasons of fastening bolts are analyzed using fractography, metallographic analysis and hardness testing in this paper. 一根用来紧固节段式水泵的穿缸螺栓仅服役3个月便产生断裂。
- Fractograph analysis, metallographic examination and hardness testing have been applied in checking the reason of oil spout fracture in this paper. 对喷油嘴开裂原因进行了断口分析、金相检验和硬度测定。
- The characteristics of so-called silicon diffusion layer were analyzed through EPMA and hardness test. 通过成分分析（EPMA）和硬度测试， 分析了硅扩散层的特征。
- Hardness testing shows that the hardness of the surface reaches 1050HK.The hardness of the alloyed layer emerges in gradient distribution. 硬度检测表明纯钛表面硬度可达1050HK，合金渗层硬度呈梯度分布；
