【摘要】 在中心投影、平行投影作图理论研究的基础上，对三维笛沙格图作了进一步分析、研究，得出空间苗沙格图的一般情况、特殊情况与中心投影、平行投影二求三问题的联系，并涉及三维空间的计算问题。更多还原

【Abstract】 On the bases of centrical projection graphics and parallel projection graphics, throngh Studying 3-D (three-dimention) Desargue configuraion furcher we get the relations on 3-D Desargue general configuraion and its particular configuraion to the method of drawing perspective pictures and axonmetric drawing from two to the third. The calculation on construcing 3-D spare be studied too.更多还原