| 释义 |
down quark
down quarkn. Abbr. d The flavor of quark that has a charge of - 1/3 and a mass about 10 times that of an electron, belongs to the first generation of elementary fermions, and is a component of nucleons and other hadrons.down′ quark`
n. the quark having electric charge −? times the electron's charge and together with the up quark being a constituent of nucleons. [1975–80] Thesaurus| Noun | 1. | down quark - a stable quark with an electric charge of -1/3 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" |
down quark
down quark[′dau̇n ‚kwärk] (particle physics) A quark with an electric charge of -⅓, baryon number of ⅓, and 0 strangeness and charm. down quark
Related to down quark: up quark, Quark theoryWords related to down quarknoun a stable quark with an electric charge of -1/3 and a mass 607 times that of an electronRelated Words |