分解跟踪法使球体的截交线作图由难变易

The Effect of Decomposing Tracking Method in Drawing the Sphere's Line of Section

《工程制图》的教学是让学生具有一定的绘图与识图的能力,这其中重点是要训练学生的空间想象和分析能力。分解跟踪法的使用,能使学生将投影分析与几何作图结合起来,从立体到平面,再从平面到立体,实现了二维平面图形与三维立体形状的结合,培养了学生的空间想象与空间思维能力,增强了学生读图画图的能力。

The goal of Engineering Drawing is to cultule the student＇s capability of painting and reading chart.The key is to train the student＇s space imagination and analytical skill.The decomposing tracking is a good method for the student to tie project analytical and geometrical construction together.It is useful to culture the student＇s space imagination and space thinking capability,to strengthen the student＇s capability of reading drawing and drawing.