corundum
英 [kə'rʌndəm]
美 [kə'rʌndəm]
词性
名词
基本解释
n.[矿]刚玉,金刚砂
网络释义
a hard crystalline form of aluminum oxide, typically blue in color and used as a gemstone and abrasive.
例证
1. Rubies and sapphires are both varieties of corundum.
红宝石和蓝宝石都是刚玉的变种。
2. Corundum is one of the hardest minerals known to man.
刚玉是已知的最硬的矿物之一。
红宝石和蓝宝石都是刚玉的变种。
2. Corundum is one of the hardest minerals known to man.
刚玉是已知的最硬的矿物之一。