您要查找的是不是：
- rebound hardness test 回跳硬度试验
- 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。
- 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 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。
- The aging process of mullite short fibre reinforced ZL109 composites was studied via hardness test. 通过测试硬度的方法，对莫来石短纤维增强ZL109复合材料的时效析出行为进行了研究。
- 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。
- Indentation methods of hardness testing comprise two principal groups. 压痕法测定硬度包括两大类。
- The advantage of hardness test is fast, inexpensive and relatively nondestructive, leaving only a small indentation in the material. 硬度测试的优点是快，便宜，并且比较不具破坏性，只在材料上留下小小的压痕。
- combined method of pulse velocity and rebound hardness 超声回弹综合法
- LCR test instrument, Shore hardness test instrument and capacitive electrostrictive properties test device are used to test the effect of doped PUE. 采用LCR测试仪、邵氏硬度计和电容法电致伸缩特性测试装置研究了纳米钛酸钡掺杂对PUE的影响。
- The manufacturers should take the hardness test of the bomb as a means of quality control, and put it into the quality assurance system. 制造厂应将储气瓶硬度试验作为质量控制手段，制定储气瓶硬度质量控制标准，并将其纳入储气瓶质量保证体系中。
- Through Vickers hardness test, scoring test and indentation test, the coating thickness and theadhesion of coating with matrix were analyzed. 采用维氏硬度试验，划痕和压坑试验分析了涂层厚度和涂层与基体的结合力。
- 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？
- One hardness test shall be performed on each wetted surface cut with oxy-fuel or arc-air which is left unwelded on the finished part. 用含氧燃料或电弧气切削加工表面上的未焊接的湿表面，应作硬度试验。
- The scratch resistance of tinplate was measured by using modified QHQ type pencil hardness test appratus which is designed for organic paint containg. 移植QHQ型涂膜铅笔划痕硬度仪用来测试电镀锡板的抗划伤性。
