法线

The normal vector is computed as the "cross product" of two vectors that make up the side of the triangle.

法线是三角形两边的两个差乘结果。

This paper proposes a robust filter function, called trilateral filter function, to filter the noises in the domains of surface curvature, normal and position at each sample point while the local surface is fitted in a quadratic form. By optimizing the filtering result of curvature tensor, our approach is capable of preserving the feature on the target model.

通过在扫描模型每个采样点处拟合一个二次型曲面，设计了一个鲁棒的滤波函数--三边滤波函数；应用该函数分别对模型表面上每个点的法线、曲率和位置进行滤波；通过对曲率的滤波结果进行优化，可有效地保持三维模型表面上的特征。

The shape-form analysis and load analysis were done by nonlinear FEM. On the basis of surface FEM grid nodes, geometry property research of structure curved surface was progressed, including normal vector, GAUSS curvature, mean curvature and principal direction vector. In this process, the approximate expression of surface didn't need to he known.

采用非线性有限元法进行了膜结构的形态分析和荷载分析，得到了曲面有限元网格；通过离散微分几何方法，研究了薄膜结构曲面的几何性质，包括曲面的法线向量、高斯曲率、平均曲率和主方向矢量，避免了复杂的曲面拟合过程。

Construct two mutually orthogonal tangents of the deltoid. Where do they meet?

三角星形线的两条互相垂直的法线的交点在哪里？

The governing equations of laminate-faced sandwich cylindrical shallow shells based on the first-order shear theory with large deflection are high-order partial differential equations. Four dependent functions are involved.

大挠度剪切理论下复合材料夹层圆柱扁壳的稳定性控制方程是一组非线性高阶常系数偏微分方程，其中包含四个独立的函数，它们分别为横向挠度w、参考曲面的法线转角Φx、Φy和应力函数F。

A copy of source object, destination objects normal and position.

一个源物体的拷贝，以及目标物体的法线和位置。

Object positioning is based on local normal of a polygon or vertex in destination object and world up axis.

物体的位置是基于目标物体表面的顶点和面的自身法线和世界空间向上的轴线确定的。

Object placer allow us to place copies of source object into the destination object's vertices and/or polygon's centre, Also aligned with local normal.

Object placer工具允许我们放置源物体的拷贝到目标物体的顶点或多边面的中心，当然还要跟它们自身的法线方向对齐。

When you watch from the other point of view, the backlight can penetrate as a result of next pixels into the human eye, it can cause color distortion, LCD display is the visual angle of view means to receive the attention of the distortion value of the angle with the normal screen.

当你从其他角度观看时，由于背光可以穿透旁边的像素而进入人眼，所以会造成颜色的失真，LCD显示器的可视角度就是指能观看到可接收失真值的视线与屏幕法线的角度。

The general formulation of double refraction or internal double reflection at a single interface is analyzed in terms of Huygens'principle and surface boundary conditions.

根据惠更斯定理和边界连续条件，分析了单个界面上的双折射与全内双反射，给出了光线方向和光波法线方向的普遍公式。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。