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单词 coesite
释义

coesite


coesite

(ˈkəʊsaɪt) n (Minerals) a form of silicon dioxide produced when high pressure and temperature are applied to quartz

coesite


coesite

[′sē‚zīt] (mineralogy) A high-pressure polymorph of SiO2 formed in nature only under unique physical conditions, requiring pressures of more than 20 kilobars (2 gigapascals); usually found in meteor impact craters.
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更新时间:2024/12/24 21:57:27