英英辞典 - English Dictionary | CUERBO - クエルボ英語辞書

lanthanum

noun

  1. a white soft metallic element that tarnishes readily

    容易に曇る白い軟質の金属元素

    occurs in rare earth minerals and is usually classified as a rare earth

    希土類鉱物の形で存在し、通例希土類元素として分類される

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