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词汇 J/psi particle
释义 J/psi particle AHD[jāʹsīʹ, -psīʹ] D.J.[ˈdʒeɪˈsaɪ, -ˈpsaɪ]K.K.[ˈdʒeˈsaɪ, -ˈpsaɪ]n.(名词)
  1. An electrically neutral meson having a mass 7,213 times that of the electron and a mean lifetime of approximately 1 × 10-20 seconds. Also called J particle Also called psi particle J粒子,psi粒子:一带电的中性介子质量为电子的7,213倍且其平均寿命约为1 × 10-20秒 也作 J particle 也作 psi particle
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