研磨剂
adj.研磨的
(1) A hard substance used for grinding , honing , lapping , superfinishing , polishing, pressure blasting, or barrel finishing . Abrasives in common use arealumina, silicon carbide, boron carbide, diamond, cubic boron nitride, garnet, and quartz.
![abrasive tools abrasive](http://img.413yy.cn/images/b/04180503/1816030504182959309821.jpg)
(2) Hard particles, such as rocks, sand, or fragments of certain hard metals, that wear away a surface when they move across it under pressure. See also superabrasives .