hand sketch短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 🌏优秀的手绘技能；脑中一大堆概念用手绘 To outline the silhouette of point cloud or mark some special signs on it, a novel approach for creating curves on point cloud with free- hand sketch is presented. 为了勾勒点云的骨架或在点云上标记符号，提出一种基于手绘的点云表面曲线构造方法。 http://dict.cnki.net