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外法线
exterior normal
[数] outer normal
[数] outer normal
- 在散度定理中的约定是,将曲面的定向取为外法线的方向。
The convention in the divergence theorem is that we orient the surface with a normal vector pointing always outwards. - 在求解过程中，用单位矢量来代表刀刃线和刀面的外法线方向，简化了推导过程和计算公式。
Unit vectors are used to represent the directions of cutting edges and tool surfaces so that the calculating process and formulas are simplified. - 根据估算外法线向量与球心顶点向量的内积正负情况对每个单元实体的有效性进行检查；
Its validity of each solid element is checked if their internal products between the estimated outward normal vector and the vector from sphere center to vertex are all positive or not.
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