Fundation translation vector

Given that basic vectors α,β and γ of curve Γ:r=r(s),there curvature and torsion parting for κ,τ.

已知曲线Γ:r=r(s)的基本向量为α,β,γ,曲率和挠率分别为κ,τ,研究了由γ,β和r所作出的曲线Γ-:ρ=r+aγ+b ∫ from n=S_0 to S(βds)的曲率-κ和挠率-τ的计算问题。

Some conditions for the basic vector curvature and torsion of two curves with one-one corresponding relationship are studied when,two of their tangent line,main normal and subnormal parallel or coincide in the corresponding point.

有一一对应关系的 2曲线在对应点处的切线、主法线、副法线中某 2条平行或重合时 ,研究了曲线在该点处的基本向量、曲率、挠率满足的条