unicursal
1. geometrically a unicursal curve may be traversed by the continuous motion of a moving point
几何上,一条单行曲线可以由一个动点的连续运动描出。
2. unicursal graph
单行图
3. unicursal involution
单行对合
4. unicursal equation
单行方程
5. unicursal curve
单行曲线
6. unicursal surface
单行曲面
7. unicursal quartic
有理四次线, 单行四次曲线