英语词汇“alumina”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

alumina

/əˈluːmɪnə

noun [mass noun]

A white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals.

The silica, alumina, and iron come from sand, clay, and iron ore....

The major exports are bauxite, alumina, gold, and diamonds.
Already some sites yield little more than a mass of crystallised aluminium oxide.

Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia.

单词	alumina
释义	alumina /əˈluːmɪnə / noun [mass noun] A white solid that is a major constituent of many rocks, especially clays, and is found crystallized as corundum, sapphire, and other minerals. Alternative name: aluminium oxide; chemical formula: Al₂O₃. The silica, alumina, and iron come from sand, clay, and iron ore.... The major exports are bauxite, alumina, gold, and diamonds. Already some sites yield little more than a mass of crystallised aluminium oxide. Origin Late 18th century: from Latin alumen (see alum), on the pattern of words such as magnesia. Rhymes noumena, numina
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