$10
Watch-cases and accessories—Colour range and designations of gold alloy coverings
全国钟表标准化技术委员会(SAC/TC 160)
本标准规定了表壳体及其附件金合金覆盖层的颜色范围和名称、色度坐标的测量方法和目视比色法。
本标准适用于表壳体及其附件金合金覆盖层。
This standard is the original Chinese electronic standard.
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If you need translation, please contact email: ChineseStandardsLibraryS001@gmail.com.