
Watch-cases And Accessories - Gold Alloy Coverings - Part 2: Determination Of Fineness, Thickness, Corrosion Resistance And Adhesion
出版:International Organization for Standardization

专家解读视频
Watch-cases And Accessories - Gold Alloy Coverings - Part 2: Determination Of Fineness, Thickness, Corrosion Resistance And Adhesion
出版:International Organization for Standardization
专家解读视频