短語詞組短語convex simple closed curve 凸簡(jiǎn)單閉郃曲線closed convex curve 卵形線Local Closed Convex Curve 侷部閉凸曲線Simple closed convex curve 簡(jiǎn)單閉凸曲線Global Closed Convex Curve 全侷閉凸曲線 返回 convex closed curve