英语词汇“helium-4”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	helium-4
释义	helium-4 helium-4 [′hē·lē·əm ′fȯr] (nuclear physics) The isotope of helium with mass number 4, constituting nearly all naturally occurring helium.
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