normal to a surface

• 曲面的法线,表面的法线

normal to a surface的用法和样例：

例句

1. Also make sure the surface normals are pointing outwards.
   也确定表面的法线指向外面。
2. Then these normals are used to recover the surface reflectance by minimizing the fitting error of diffuse and specular reflectance model.
   然后根据求出的法线用全局优化的迭代方法来恢复物体的材质。