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单词 deuterium
释义

deuterium

noun
/djuːˈtɪəriəm/
/duːˈtɪriəm/
[uncountable]
(symbol D)
(chemistry)
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  1. an isotope (= a different form) of hydrogen with twice the mass of the usual isotope
    Word Origin1930s: modern Latin, from Greek deuteros ‘second’.
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更新时间:2024/9/22 8:33:21