| 释义 |
bottom quark
bottom quarkn. Abbr. b The flavor of quark that has a charge of - 1/3 , has a mass about 8,220 times that of an electron, and belongs to the third generation of elementary fermions. Also called beauty quark.bot′tom quark`
n. the quark having electric charge −? times the electron's charge and greater mass than the up, down, charmed, and strange quarks. [1975–80] Thesaurus| Noun | 1. | bottom quark - a quark with a charge of -1/3 and a mass about 10,000 times that of an electronbeauty quarkquark - (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" |
bottom quark
bottom quark[′bäd·əm ‚kwärk] (particle physics) A quark with a mass of about 4.7 GeV, electric charge of -⅓, zero isotopic spin, strangeness and charm, and a new quantum number associated with it. Also known as b quark; beauty quark. Symbolized b. bottom quark
Related to bottom quark: charm quark, top quark, up quark, strange quarkSynonyms for bottom quarknoun a quark with a charge of -1/3 and a mass about 10,000 times that of an electronSynonymsRelated Words |