On Solving Some Problems in Descriptive Geometry by Assistant Spherical Surface[J]. Journal of Civil and Environmental Engineering, 1998, 20(5): 120-122.
On Solving Some Problems in Descriptive Geometry by Assistant Spherical Surface[J]. Journal of Civil and Environmental Engineering, 1998, 20(5): 120-122. DOI: 10.11835/j.issn.1674-4764.1998.05.024.
several typical example were used to explain the applicaions of the method of assistant sphrical surface in this paper With such method theproblems in descriptive geometry could be solved simply.