The test result shows that the greater the carborundum grain size, the more the carborundum content, the faster the tools wearing and tearing;
试验结果表明:碳化硅颗粒尺寸越大、碳化硅含量越多,对刀具的磨损速度越快;
简答网 · 四六级英语
简答网 · 高考英语
简答网 · 双语娱乐资讯