经测试发现，铸铁的组织均匀和碳化物细小时，其布氏硬度与机械加工性能之间呈线性关系。
The test results shows that there is a linear relationship between Brinell Hardness and the machinability of cast iron with homogeneous microstructure or tiny carbides.
介绍了双面静电植砂网格砂布的生产工艺和静电场的设计，碳化硅砂粒在网格基布上呈峰状排列，提高了网格砂布的磨削效率。
The grinding efficiency of reseau abrasive cloth is improved because of SiC is arranged in a cusp on the reseau base cloth.
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