标 准 编 号：DIN 50602-1985 简体中文标题：金相检验方法.用金相图对优质钢的非金属杂质作显微检查 繁体中文标题：金相检验方法.用金相图对优质钢的非金属杂质作显微检查 English Name：Metallographic examination; microscopic examination of special steels using standard diagrams to assess the content of non-metallic inclusions
