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The purely kinematical equation for the tangent vector of a line element is derived. 导出了线元切向量的变形方程以及拉伸轴在极射赤面投影图上位置变化计算公式。
During calculation of the tangent vector, the complete Jacobian matrix is adopted so that the tangent vector is computed accurately. 该方法在切向量求取环节，采用完整的雅可比矩阵做系数矩阵求取切向量，从而保证切向量的准确性；
An object recognition and localization algorithm based on local feature?turning angle between neighbouring tangent vectors, is presented. 提出了基于切矢转角局部特征的目标识别与定位算法。
SVD Method for Selecting Tangent Vector in Tangent Distance 切线距离中选取切线向量的SVD方法
Many-Knot Curve Construction with Controlled Tangent Vector 带切向控制的多结点曲线造型方法
Based on Kirov's Theorem,applying many-knot spline functions,one kind of curve or surface modeling method with tangent vectors or normal vectors,by which some local shapes of curves or surfaces can be controlled,has been introduced. 基于Kirov定理,利用多结点样条函数,研究一类带有可控参数的曲线曲面造型方法。
If you are up to it, you can derive the proper equation yourself by solving the calculus differential equation for a curve with a constant angle between the radial and tangent vectors (HUH?). 通过解一个微积分等式：曲线的射线与切线形成的角度是恒量，可以自己得出正确的方程式。
New Geometrical Explanation of the Definition of Tangent Vector on Differential Manifolds 微分流形上切向量定义的新几何解释
Vector Bundles and the Differential: The Tangent Bundle. 向量丛和微分:切丛。
The curvature of a curve; the magnitude of the derivative of its unit tangent vector with respect to distance on the curve 曲线的曲率;为单位切向量对距离取导数所得向量的大小
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。
Adjusting Shape of NURBS Curve by Cross Product of Tangent Vectors 用导矢叉乘法对NURBS曲线进行形状调整
It's not easy to follow her think because she's always go off at a tangent. 要跟上她的思路并非易事，因为她老是突然扯到题外去。
Use menus to provide a pedagogic vector. 用菜单来提供一条学习的途径。
The tangent may be used to find the direction. 这方向也可用正切求得。
Don't fly off at a tangent, stick to the subject. 紧扣主题，不要跑野马。
That is transitory or semipersistent in its vector. 在它的介体中是属于中间的或半持久的。
The vector product is said to be anticommutative. 可以说矢积是反交换的。
These are inserted into a cloning vector. 它们被插入克隆载体。
Don't fly off at a tangent,stick to the subject. 紧扣主题，不要跑野马。