“成色”的拼音？

黄金的成色the fineness of the gold柯达叙述了一种直链的活性亚甲基两当量的黄成色剂.Kodak company describes open chain reactive methylene two - equivalent yellow - forming conplers.这对鸡血石的镯子成色很好.The quality of this pair of bloodstone bracelets is very ...

“成色”的英语可以翻译为：the percentage of gold or silver in a coin, etc.，the relative purity of gold or silver，（质量） quality ...