Read Edit View history 下夸克 xiàkuākè down quark Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 下夸克 · xiàkuākè · down quark 2026/03/04 下夸克 xiàkuākè down quark down quark (particle physics) 下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