ASTM G47-20 确定2XXX和7XXX铝合金产品应力腐蚀敏感性的标准试验方法.pdf文档页数:6文档大小:2.89MB文档格式:pdf This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision
SN/T 1877.5-2017 金属器皿表面多环芳烃的测定.pdf文档页数:17文档大小:12.42MB文档格式:pdf SN 中华人民共和国出入境检验检疫行业标准 SN/T1877.5—2017 代替SN/T1877.5一2009 金属器皿表面多环芳烃的测定 Determination of polycyclic aromatic hydrocarbons in metalwa