摘要
证明了直纹面导线上向径和直母线上单位向量与此二向量的切向量的三个特殊性质
It proves the three special natures of rector radius the vecfor of rectilinear generator and the two vectors on ruled surface derived cure
出处
《湘潭师范学院学报(社会科学版)》
2000年第3期42-44,共3页
Journal of Xiangtan Normal University(Social Science Edition)