perspective drawing短语⁹⁰⁸⁸⁷⁺⁷ 基本例句 透视画 In this paper the arithmetic of2D column drawing and3D perspective drawing of the concrete pouring for arch dam is studied, and the concrete pouting is simulated by computer. 本文主要研究拱坝混凝土浇筑的二维柱状图和三维透视图的算法,及混凝土浇筑的计算机模拟。 dictall Isometric drawing is much simpler than perspective drawing. 等角图较透视图简单得多。 bab