| 单词 | psi particle |
| 释义 | psi particle in British English or psion (ˈsaɪɒn) noun J/psi particle psi particle in American English Particle Physics J particle psi particle in American English (sai, psai) noun Physics 1. any of a family of mesons consisting of a charmed quark and a charmed antiquark 2. an early name for the J/psi particle Word origin [1970–75]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: New Age, cornrow, good old boy, stress test, urban legend |
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