英语词汇“eta 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	eta meson
释义	eta meson eta meson n. An electrically neutral meson having a mass 1,071 times that of the electron and a mean lifetime of about 5 × 10^-19 second. eta meson eta meson [′ād·ə ′mā‚sän] (particle physics) Neutral pseudoscalar meson having zero isotopic spin and hypercharge, positive charge parity and G parity, and a mass of about 549 MeV; decays via electromagnetic interactions.
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