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

单词	columbite
释义	Word Frequency columbite (kəˈlʌmbaɪt) noun a black mineral consisting of a niobium oxide of iron and manganese in orthorhombic crystalline form: occurs in coarse granite, often with tantalite, and is an ore of niobium. Formula: (Fe, Mn)(Nb)2O6 Also called: niobite Word origin C19: from columbium + -ite1
随便看	mail-order catalogue mail order firm mail orders mailpouch mail room mailroom mailsack mailsack mail server mailshot mail slot mail train mail truck mail van mailvan maim mai mai maimed maimedness maimer Maimonidean Maimonides main main beam main bearing

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