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Thorium

['θɔːrɪəm] or ['θɔrɪəm]

解釋/意思:

(noun.) a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands.

錄入:萨姆纳--From WordNet

解釋/意思:

(n.) A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc., and isolated as an infusible gray metallic powder which burns in the air and forms thoria; -- formerly called also thorinum. Symbol Th. Atomic weight 232.0.

克莉丝汀編輯

解釋/意思:

n. a rare metal resembling aluminium but taking fire below a red heat and burning with great brilliancy.—Also Thorī′num.

校對:米利森特

例句/造句/用法:

丹尼校對

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