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美国对船用铝合金的考核增加了晶间腐蚀标准ASTM G67。通过用工业浓硝酸和国标试剂级硝酸相结合的方法,解决了我国没有符合该标准用酸的问题。
The United States on the assessment of marine aluminum alloy increased intergranular corrosion ASTM G67. By using industrial nitric acid and the national standard reagent-grade nitric acid combination of methods to solve our country did not meet the standard acid problem.