Read Edit View history 凸线 tūxiàn convex curve Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 凸线/凸線 · tūxiàn · convex curve 2026/03/04 凸线 / 凸線 tūxiàn convex curve convex curve 设计图中那条流畅的凸线十分醒目。 noun created sense Mar 4, 2026, 02:25 AM