英语词汇“psi meson”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	psi meson
释义	psi meson psi meson P5686800 (sī, psī)n. An electrically neutral vector meson consisting of a charm quark and a charm antiquark and having a mass about 7,213 times that of an electron and a mean lifetime of about 2 × 10^-21 second.
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