单词	J/psi particle
释义	J/psi particle noun ˌjā-ˈsī-  -ˈpsī- : an unstable neutral fundamental particle of the meson group that has a mass about 6000 times the mass of an electron called also J particle, J/psi, psi particle Word History First Known Use 1977, in the meaning defined above
随便看	talkfest talkfests talkie talkier talkies talkiest talkilier talkiliest talkiness talkinesses talking talking (about) talking (into) talking a blue streak talking about talking around talking at talking book talking chief talking down talking down (to) talking down to talking film talking head talking into

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