英语词汇“j/psi particle”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	j/psi particle
释义	j/psi particle \ˈjāˈsī-\ noun Usage: usually capitalized J : an unstable neutral fundamental particle of the meson family that has a mass about 6000 times the mass of an electron, has an unusually long lifetime, and is thought to consist of a charmed quark and antiquark pair — called also J particle psi particle
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