| 单词 | j particle |
| 释义 | J particle in American English Particle Physics a short-lived, relatively massive meson having no charge and a mass c. 6,060 times that of an electron: it is the combination of a charmed quark and its antiparticle J particle in American Englishnoun Physics an early name for the J/psi particle Word origin [1970–75; named by S.C.C. Ting, allegedly from the resemblance of the letter J to the Chinese character for Ting]This word is first recorded in the period 1970–75. Other words that entered Englishat around the same time include: consciousness-raising, cornrow, good old boy, salsa, urban legend |
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