钢铁零件 渗氮层深度测定和金相组织检验
Steel-iron parts—Determination of nitrided case depth and metallographic examination of nitriding structure
标准状态
发布于:1989-05-06
实施于:1990-01-01
已废止
Steel-iron parts—Determination of nitrided case depth and metallographic examination of nitriding structure