tangent to

And the reason for that is that we care actually only about these specific directions that are tangent to variable of g.

原因就是，我们只在意这些向量的方向是与g相切。

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

切向的：沿圆周的一个切线方向。植物体存在的圆形可以为茎杆表面。

If it is tangent to the circle it doesn't have any normal component.

如果相切的话，就不会有法向量方向的分量。

R So, you're asking about whether the delta r is actually strictly tangent to the curve.

你问△，是否完全沿曲线的切线方向。

We put forward in this article the method of applying common tangent circle drawing to ellipses.

提出应用公切圆法画椭圆,可不必推平行线和多次加长圆规,只需用直线尺作图,且理论上误差为零.

A Sphere Tangent to Four Lines

与四条直线相切的球

They changed their course to something like a tangent to the earth

他们将航线改变为差不多与地球呈正切的方向

The word horizontal is applied only to the plane which is tangent to the ground-level equipotential surface.

地平面这个词则只表示与地面水准等位面相切的平面。

If you remember what we did several times, well, along the circle that vector field now is tangent to the circle.

我们做过若干次了，沿着圆，向量场与圆相切。

Now stick to the point. Let's not fly off at a tangent as we did last week.

请紧扣要点,不要像上星期那样扯到题外.

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

And, that's the same thing& as being tangent to the level.

这就和“与等值面相切”说的一样了。

Drag to add two arcs with adjustable radii and connecting tangent lines.

拖动此形状,可添加具有可调半径和相连切线的两条弧线.

And that line is tangent to the surface.

一条与曲面相切的直线。

The direction is tangent to the trajectory.

方向就是轨道的切线方向。

Study on Trajectory Plan Arithmetic for UCAV by Using Tangent to Circles

无人战斗机航路规划圆切线算法

Another is to intenerate the input vectors by hyperbola tangent function.

二是采用双曲线正切函数柔化输入矢量.

Construction of a Plane Tangent to a Quadratic Surface

二次曲面的切平面

So, on the unit circle, F is tangent to the curve.

也就是，在单位圆上，F是曲线的切线。

But, actually, that is not true because here the circle is tangent to the axis.

但实际上，这是不对的，因为这个圆与这个坐标轴相切。

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

它是与等值面相切的，对不对？

One of the circles π 1 is tangent to the circle σ 1 of the mirror R1 of the cavity;

其中的π1圆与腔的R1镜的σ1圆相切；

Actually, delta r is not strictly tangent to anything.

实际上，△r完全不与任何一点相切。

Determine: the center of the smallest sphere which is tangent to four non-parallel unlimited skew lines in general positions

求与空间四条异面直线相切的球中最小的球

The plane that contains all the lines tangent to a specific point on a surface.

包含所有在表面上的一个特殊的点相切的线的平面。

Spherical indicatrix of tangent to a curve

曲线切线的球面指标

Given a triangle, construct the deltoid tangent to its sides.

给定三角形, 作三角线与其三边相切.

So, the velocity vector is going to be always tangent to the curve.

速度向量总是与曲线相切的。

Departure angle: back-end automotive primer highlights the tangent to the rear of the angle with the ground.

离去角：汽车后端突出点向后轮引的切线与地面的夹角。

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。