Read Edit View history 凸面 tūmiàn convex surface Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 凸面 · tūmiàn · convex surface 2026/03/04 凸面 tūmiàn convex surface convex surface 这种透镜的一个面是凸面。 created sense Mar 4, 2026, 02:25 AM