Read Edit View history 上夸克 shàngkuākè up quark Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 上夸克 · shàngkuākè · up quark 2026/03/04 上夸克 shàngkuākè up quark up quark (particle physics) 上夸克是构成质子和中子的基本粒子之一。 noun created sense Mar 4, 2026, 02:25 AM