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corundum

/kəˈrʌn.dəm/

翻译: 一种非常坚硬的矿物,由氧化铝组成,常用作工业磨料;其透明且色彩美丽的变种(如红宝石和蓝宝石)可作宝石。

1 个条目

noun

/kəˈrʌn.dəm/C2formaltechnical
  • zh一种非常坚硬的矿物,由氧化铝组成,常用作工业磨料;其透明且色彩美丽的变种(如红宝石和蓝宝石)可作宝石。

A very hard mineral composed of aluminum oxide, often used as an abrasive in industrial applications.

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  1. C1formaltechnical

    A very hard mineral composed of aluminum oxide, often used as an abrasive or as a gemstone when transparent.

    zh刚玉

    • Corundum is one of the hardest naturally occurring minerals.
    • Industrial corundum is used for grinding and polishing metals.
    • Sapphires and rubies are both varieties of corundum.

    同义词aluminaaluminum oxide

词形
  • corundums plural form
  • corundums' possessive plural form
  • corundum's possessive singular form