DIN 53 203 Grindometer acc. to Hegman Model 232 Model 232-15 磨碎细度测定,ISO / EN / DIN / ASTM, 比例15μm Grindometer acc. to Hegman Model 232 Model 232-25 磨碎细度测定,ISO / EN / DIN / ASTM, 比例25μm Grindometer acc. to Hegman Model 232 Model 232-50 磨碎细度测定,ISO / EN / DIN / ASTM, 比例50μm Grindometer acc. to Hegman Model 232 Model 232-100 磨碎细度测定,ISO / EN / DIN / ASTM, 比例100 μm