GB/T 9797-2022金属及其他无机覆盖层镍、镍+铬、铜+镍和铜+镍+铬电镀层国家标准
英文:Metallic and other inorganic coatings—Electrodeposited coatings of nickel,nickel plus chromium, copper plus nickel an...
英文:Metallic and other inorganic coatings—Electrodeposited coatings of nickel,nickel plus chromium, copper plus nickel an...