On investigation surface asymptotic curves 曲面的渐近曲线探讨
Asymptotic direction and asymptotic curve of spacelike surface in r 1中类空曲面的渐近方向与渐近曲线
百科解释
In the differential geometry of surfaces, an asymptotic curve is a curve always tangent to an asymptotic direction of the surface (where they exist). It is sometimes called an asymptotic line, although it need not be a line.