pumicing

用法例句

As shown by the results of difference of properties of the two kinds abrasive,the way to improve properties of Chinese abrasive for polishing was proposed.

通过对国内外抛光磨石的硬度，主要组成的成分、含量和组织结构进行分析、对比，找出了国内外抛光磨石的性能差别，提出了制作优质抛光磨石可供借鉴的方向和性能指标。