Surface normal vector technique is used to setup geometry models for blanks. Combined it with s AE, we implement algorithm for NC machining simulation and Verification.

采用曲面的表面法矢建立了毛坯的几何模型，结合扫描体代数方程，实现了加工仿真和NC代码验证算法。

youdao

Let's break the name down. The "normal" is a vector perpendicular to a surface, which we can use to calculate lighting.

首先我们从名字上开始分析，所谓“法线”指的是垂直于平面的向量，我们使用这个来计算光照。

youdao

OK, and that's going to be the normal vector to the surface or to the tangent plane.

这就是切平面的，或者说这个曲面的法向量。

youdao