mineral corundum 中文意思是什麼

mineral corundum 解釋
礦物剛玉
  • mineral : n. 1. 礦物;〈口語〉礦石;【化學】無機物。2. 〈英國〉〈pl. 〉= mineral water. adj. 礦物(性)的;含礦物的;無機的。 the mineral kingdom 礦物界。
  • corundum : n. 【礦物】剛石,剛玉;【機械工程】金鋼砂(磨料);金剛砂磨輪。
  1. Ruby is the red variety of the mineral corundum, one of the hardest minerals on earth, of which the sapphire is also a variety

    紅寶石的礦物名稱為剛玉,其硬度是地球上硬度最佳的礦物之一,而藍寶石也屬剛玉家族。在摩氏硬度表中剛玉的硬度是被列為
  2. Long ago, it was decided that all gemstones of the mineral corundum should be referred to as sapphire, except the red colour, which was called ruby

    。最後達成的協議是:稱紅色的藍寶石為紅寶石,稱其他顏色為藍寶石和彩色藍寶石。
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