natural abrasive

基本解释

Since then, a natural abrasive in the abrasive in the proportion of reduced gradually.
此后，天然磨具在磨具中所占比例逐渐减少。
Abrasives source of their raw materials, there are two kinds of natural abrasive and artificial abrasives.
磨具按其原料来源分，有天然磨具和人造磨具两类。
This paper discusses the performance and application of natural abrasive such as diamond, corundum, garnet, quartz, flint, pumice, diatomite, hematite and perlite.
本文介绍了天然金刚石、天然刚玉、石榴石、石英、燧石、浮岩、硅藻土、赤铁矿、珍珠岩等天然磨料的性能特点和其应用。