rock crystal
名词 n.
英文释义
名词 n.
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A clear, colorless form of the silica-based mineral quartz.
— […] I have for Trials sake taken Lumps of Rock Crystal, and Heating them Red hot in a Crucible, I found according to my Expectation, that being Quench’d in Fair water, even those that remain’d in seemingly entire Lumps, exchang’d their Translucency for Whiteness […]
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数据来源: Wiktionary