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单词 charmonium
释义 char·mo·ni·um
\chärˈmōnēəm\ noun
(plural charmonium)
Etymology: charm (herein) + -onium (as in positronium)
: any of a group of fundamental particles that are held to consist of a charmed quark-antiquark pair
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更新时间:2024/11/14 18:27:11