You got specific colors by adding metallic compounds to the other glass making ingredients.
通过在其他制作玻璃的原料中添加金属化合物，你可以得到特定的颜色。
Another suggestion is that the color might be related to ice with high levels of metallic compounds, including copper and iron.
另一种说法是，这种颜色可能与冰中含有的大量金属化合物有关，包括铜和铁。
Metallic compounds include boride, silicious and compound carbide, etc.
金属化合物有硼化物、硅化物、复合碳比物等。
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