切线

First, a map between the cones and tangent surface on C-Bézier curve und two-dimensional plane is found respectively and then a ruled surface between two Bezier curves is constructed and a sufficient condition on its developablity is given.

zier曲线上锥面、切线曲面的展开方法。然后，构造两条空间B？zier曲线上的直纹面，给出了它成为可展曲面的一个充分条件，并通过保角保长原则，将其贴合到平面上。

It is considered that machnism of sand saltation is related to theupward of saltation is conisistent with the tangent line direction of collision point.

关于跃移沙粒的起跃机制问题笔者认为，是因沙粒沿地表运动并发生碰撞而产生的"斜面飞升力"所致，其跃移方向应与碰撞点的切线方向一致。

If the slope of the secant is greater than the slope of the tangent then the curve is inelastic at the point.

如果某个点的切线的斜率小于该点与原点构成的割线的斜率，那么该函数函数在该点上为非弹性。

Increase of 47% in the unconned compression strength compared to increase of 26% in the secant modulus at the maximum stress level, 25% in the secant modulus at half of the maximum stress level, and 23% in initial tangent modulus.

这一变化的数额膨润土10日至15 ％，导致平均增加了47 ％的无侧限抗压强度相比增加了26 ％的割线模量的最高应力水平， 25 ％的割线模量的一半的最大应力水平， 23 ％的初始切线模量。

Apply Newton tangent and secant method to solve...

在matlab中应用牛顿切线法和割线法求解一元多次方程。

According to the primary principles of the half division method and Newton method ,a new method called horizontal secant method was presented for one dimension search.

根据经典的一维搜索算法———对分法和Newton 切线法的基本原理，提出了一种新的一维搜索算法———水平割线法。

A trial and error method is suggested, and comparisons with the secant stiffness method and the tangential stiffness method are made in the paper.

本文提出了利用基于一系列线弹性有限元解来获得弹塑性材料结构的极限承载能力的试验误差法，并将它与切线法和割线法进行了比较和讨论。

I didn't want to sidetrack into that tangent in my article, partially to keep it short, and partially because I'm not familiar myself with just what factors might be involved.

我并不想避开这个切线在我的文章，部分保持短，部分是由于我不熟悉自己只有哪些因素可能参与。

Newton tangent method is simple and programmable with computer to solve the problem, which improves the precision and speed of the tension calculation and settles the problem of loading cable design of suspension cable-crane.

采用牛顿切线法求解公式既简单又可以利用计算机进行程序计算，提高了全悬式缆索起重机承载索张力计算的精度和速度。

The slope of a line tangent to the curve at the point is the marginal function.

需求曲线在这一点上切线的斜率也就是该点的边际函数。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。