三导线直纹四次曲面初探

An Exploration on the Ruled Surface of Fourth Order

提出了由一条二次曲线和与该二次曲线不共面的两条异面直线为导线，与该三导线均相交的直线的轨迹是一个直纹四次曲面，并对该曲面的特性作了一些初步探讨。

It is presented that the locus of a line crossed with each of two guide line and a guide conic not being on a common plane is a ruled surface of fourth order.The properties of the surface was also discussed.