绘制卫星返回地球效果图与顶柱图，通过绘图，可以把复杂、抽象的问题变得简单、直观，为问题的求解与结果的分析提供了便利。(Drawing the satellite return to earth effect map and the top column diagram, drawing and drawing, it can make the complex and abstract problems simple and intuitive, and provide convenience for solving the problem and analyzing the result.)