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我们日常用的瓷器上用红、绿、蓝等颜色是什么东西?为什么任凭洗烫蒸煮,都不会掉颜色呢?原来这些颜料大部分是金属氧化物。绿是铬或者是铜等化合物。
What are the colors of red, green, and blue used in our daily porcelain? Why do we not let the colors fade from cooking? The majority of these pigments are metal oxides. Green is chromium or a compound such as copper.