GB/T 6461-2002 Methodsfor corrosion testing of metallic and other inorganic coatings on metallic substrates-Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 6461-2002 金属基体上金属和其它无机覆盖层 经腐蚀试验后的试样和试件的评级
GB/T 6461-2002 Methodsfor corrosion testing of metallic and other inorganic coatings on metallic substrates-Rating of test specimens and manufactured articles subjected to corrosion tests
GB/T 6461-2002 金属基体上金属和其它无机覆盖层 经腐蚀试验后的试样和试件的评级