搜尋:time 在 知識單元 分類當中

符合的藏品

中文名:斑銅礦

, it turns iridescent deep purple or blue. After a period of time, it turns dark black. The streak.....more

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中文名:硫砷銅礦

the luster of the crystals and the black color may turn into silver white over time if exposed to sun.....more

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中文名:雄黃

streaks.When exposed to light for a long period of time, realgar will deteriorate into brown-yellow.....more

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