Particle Physics. Applied to a quark carrying a flavour with a charge of +2/3; symbol u (u n. at U, n.1 initialisms 1a).
| 单词 | θ79188 |
| 释义 | the world > matter > physics > atomic physics > particle physics > quark > [adjective] > up (1) up1975 Particle Physics. Applied to a quark carrying a flavour with a charge of +2/3; symbol u (u n. at U, n.1 initialisms 1a). |
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