文件标题:原材料编号与相应的国际标准编号对照说明

寸小约为0.02~0.04%,高温回火变寸为0.04~0.08%.","重型落料模,冷挤压模,深拉伸模,滚丝模,..."白刚玉","GB","WA","刚玉的基本品种,白色,与棕刚玉相比,硬度高,韧性较低.","适用于淬火钢,合金钢,高速钢,...