Vocab Bloom Hub

corundom

/kəˈrʌn.dəm/

翻译: 一种由氧化铝组成的极硬矿物,用作研磨材料,并用于生产红宝石和蓝宝石等宝石。

1 个条目

noun

/kəˈrʌn.dəm/C2formal
  • zh一种由氧化铝组成的极硬矿物,用作研磨材料,并用于生产红宝石和蓝宝石等宝石。

A very hard mineral composed of aluminum oxide, used as an abrasive and in the production of gemstones such as ruby and sapphire.

不可数

  1. C1formal

    An extremely hard mineral composed of aluminum oxide, often used as an abrasive or in gemstones.

    zh刚玉

    • Corundum is one of the hardest naturally occurring minerals.
    • The industrial abrasive is made from crushed corundum.
    • Sapphires and rubies are both varieties of corundum.

    同义词alundumemery