parametrised surface造句

例句与造句

1. Dividing this vector by its length yields a unit normal vector to the parametrised surface at a regular point:
2. In general, there are two choices of the unit normal vector to a surface at a given point, but for a regular parametrised surface, the preceding formula consistently picks one of them, and thus determines an orientation of the surface.
3. It's difficult to find parametrised surface in a sentence. 用parametrised surface造句挺难的