| 释义 |
up quark
up quarkn. Abbr. u The flavor of quark that has a charge of + 2/3 and a mass estimated at three to six times that of an electron, belongs to the first generation of elementary fermions, and is a component of nucleons and other hadrons.up′ quark`
n. the quark having electric charge ? times the electron's charge and together with the down quark being a constituent of nucleons. [1975–80] Thesaurus| Noun | 1. | up quark - a stable quark with an electric charge of +2/3 and a mass 607 times that of an electronquark - (physics) hypothetical truly fundamental particle in mesons and baryons; there are supposed to be six flavors of quarks (and their antiquarks), which come in pairs; each has an electric charge of +2/3 or -1/3; "quarks have not been observed directly but theoretical predictions based on their existence have been confirmed experimentally" |
up quark
up quark[′əp ‚kwärk] (particle physics) A quark with an electric charge of +⅔, baryon number of ⅓, and 0 strangeness and charm. Symbolized u. up quark
Related to up quark: down quarkWords related to up quarknoun a stable quark with an electric charge of +2/3 and a mass 607 times that of an electronRelated Words |