GB/T 30834-2022钢中非金属夹杂物的评定和统计扫描电镜法国家标准
英文:Rating and classifying of inclusions in steel—Scanning electron microscope method GB/T 30834-2022介绍: 国家标准《钢中非金属夹杂物的评定...
英文:Rating and classifying of inclusions in steel—Scanning electron microscope method GB/T 30834-2022介绍: 国家标准《钢中非金属夹杂物的评定...