Read Edit View history 一一映射 yīyīyìngshè bijection Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 一一映射 · yīyīyìngshè · bijection 2026/03/04 一一映射 yīyīyìngshè bijection (math.) bijective map 在数学中，一一映射是指既是单射又是满射的映射。 created sense Mar 4, 2026, 02:25 AM