tangent surface

In particular, an easy case where you know you can get away without computing anything is, of course, if your vector field is tangent to the surface because then you know that there is no flux.

特别地，有一种简单的情况，是不用计算的，当向量场与曲面相切，没有通量。

It's going to be tangent to the level surface, right?

它是与等值面相切的，对不对？

Labeling for Line Drawing of Object with Tangent Curve Surface

具有相切面的曲面立体线画图标记研究

And that line is tangent to the surface.

一条与曲面相切的直线。

Adaptive slicing is realized by the calculation of the position of tangent plane of modeling surface, the angle of between the normal section line and the slicing plane, the curvature of normal section line in z-axis direction and radius of curvature.

计算出造型曲面的切平面位置、法线与分层平面的夹角、Z向法截线的曲率和曲率半径，实现优化分层。

OK, so now if you have a surface given by an evil equation, and a point on the surface, well, you know how to find the tangent plane to the surface at that point OK, any questions?

如果有一个由有点恶心的方程确定的曲面，以及在曲面上的一个点，你应该知道，如何找到这点处的切平面了，有问题么？

The methods of development for cones and tangent surface on C-B é zier curve and the complex surfaces are obtained.

zier曲线上锥面、切线曲面以及复杂曲面的展开方法。首先，构造了C-B？

Development of an approximate tangent surface using the technique of construction of an approximate ellipse

由椭圆近似画法引出的近似切线曲面

Tangential Orientated at a tangent circlecircle being , for example , the surface of a plant stem.

属于、关于一个切线或切(面),沿着或向着一个切线(或切面)的方向移动.

Now, if I have two lines tangent to the surface, well, then together they determine for me the tangent plane to the surface. Let's try to see how that works.

现在，假设曲面上有两条相交切线，那么这两条切线可以确定一个切平面，我们来看看这个平面是怎么搞出来的。

We compare of convergence speed and networks output errors of tangent planes to constraint surface algorithm and gradient descent algorithm in the training of neural networks and draw the conclusion that the tangent planes algorithm converges speedily under the same circumstance.

我们比较了梯度下降和限制平面的切平面两种算法在训练人工神经网络时的收敛速度和网络输出误差，得到了在相同条件下，切平面法比梯度下降法收敛得更快的结论。

The expression of a tangent cone family with one parameter about a quadric surface is discussed.

讨论了二阶曲面的单参数切锥族的表示方法,导出了单参数切锥族的包络面的方程.

Construction of a Plane Tangent to a Quadratic Surface

二次曲面的切平面

Assisted examination Making Spherical Tangent Plane Using Conic Surface as Auxiliary Surface

圆锥面作为辅助面求作球体切平面

Loans Must Be Processed by Legal Procedures Construction of a Plane Tangent to a Quadratic Surface

贷款切勿先买票二次曲面的切平面

Existence of tangent planes of a surface

曲面的切平面的存在性

This article presents the empirical fitting of air shock para-meters produced by explosion on tower with height of 4 charge radius and on surface ( charge is tangent with surface). Formulae for estimating these parameters are given.

本文对爆高为4倍装药半径的塔爆和触地爆（药球与地面相切）实验的空气冲击波参数进行了经验拟合，给出了估算公式。

We know that the gradient is perpendicular to this vector that's tangent to the level surface What about other vectors tangent to the level surface?

我们知道梯度向量垂直于这个向量，而速度向量是相切于等值面的，其他相切于等值面的向量，又如何呢？

The other way to think about it, the direction in which the value doesn't change is a direction that's tangent to the level surface.

另一种方法是，函数值不变的方向是，是与等值面相切的方向。