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词汇 Ruby spinel
分类 英语词汇 英语翻译词典
释义

Ruby spinel

英语百科

Spinel

Cut spinel

Spinel /ˈspɪnɛl/ is the magnesium aluminium member of the larger spinel group of minerals. It has the formula MgAl2O4 in the cubic crystal system. Its name comes from Latin "spina" (arrow). Balas ruby is an old name for a rose-tinted variety.

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