这里有个法向力-,称之为。
今天这个是用来求F的法向分量的积分的。
所以在弧线上没有力，但是肯定存在法向力。
So there is no force along the arc, but there must be a normal force.
法向力不做功吗？
操纵面偏转用物面当量法向速度模拟。
The control surface deflection is modeled by using an equivalent body velocity approach.
张力做了功吗，在环形轨道的例子里，也许法向力做了功？
Is the tension doing any work and in the case of my circular track is, perhaps, the normal force doing any work?
既然在y方向上,没有加速度，法向力也等于mgcosθ
Since there is no acceleration in the y direction, the normal force must be also mg cosine theta.
涡系诱导作用增强，对侧向力和法向力都有增值。
Enhancement of the vortical effect can benefit both the side force and the normal force.
顶点位置和法向插值是参数曲面造型的重要内容。
Interpolation to vertex positions and normals is one of important contents in parametric surface modeling.
法向圆弧螺旋锥齿轮传动是一种新的锥齿轮传动形式。
The normal arc spiral bevel gears is a new type of transmission pair.
给出了斜航式法向圆弧螺旋锥齿轮的参数化建模方法。
The parametric modeling method for loxodrome normal circular-arc spiral bevel gear was presented.
当发生接触时，表面通常通过接触面传播剪力和法向力。
When surfaces are in contact they usually transmit shear as well as normal forces across their interface.
这也使其具有较高的面向电导率以及较低的法向电导率。
It also results in high conductivity in the paper plane and low out-of-plane conductivity.
提出了一种基于表面法向的高斯混合模型的距离图像分割算法。
A range image segmentation algorithm based on Gaussian mixture model of surface normal is proposed.
当法向齿厚较大时，应该采用空间平行走刀方式规划刀具路径。
And when the thickness is large enough, the spatial parallel tool path should be adopted.
法向冻胀力则是在冻结锋面上冻胀应力沿基础影响范围之内的积分。
The normal frost heave force is an integral of soil frost heave stress at the freezing front along the range effected by a foundation.
文中介绍了有关泡面法向矢量、切向速度、曲率和接触线等的计算技术。
Numerical techniques related to the calculation of normal vector, tangential velocity, curvature and contact line are explained in detail.
首先在ANSY S软件中计算结构受结点力激励时外表面的法向位移；
The normal displacement on the coupling surface which is stimulated by node force is calculated in ANSYS firstly.
那么单摆在振动过程中，切向力、法向力及合力的大小和方向是否在变化?。
Do the tangential force, the mormal force, the resultant force and their directions during oscillation of a simple pendulum change?
当拉法向英国人说话的时候你听得懂他在说些什么吗，他跟你说西班牙语么？
Do you understand Rafa when he speaks to English, or does he speak to you in Spanish?
微观上法向键和切向键的密度衰减分别决定着材料不同的宏观全过程破坏特征。
The density evolutions of normal bond and tangent bond in micro scale determined different characters of material failure in macro scale respectively.
其辐射光谱与谷物的吸收光谱实现了良好的匹配，其法向全辐射率高达87%。
Its radiation spectrum is matching with the grain's absorbing spectrum, and its radiance is 87%.
法向：使用法向量的方向作为坐标。这在创建某些特效时非常有用（见下文）。
Nor: Uses the direction of the normal vector as coordinates. This is very useful when creating certain special effects (see below).
采用非平衡分子动力学(NEMD)方法分别模拟碳和锗纳米薄膜的法向热导率。
NEMD calculations are employed for the thermal conductivity of single crystal carbon and germanium films in normal direction.
将基于法向的曲线细分技术应用到图像插值中，提出一种基于细分的图像插值算法。
By extending the normal based subdivision scheme for curve and surface design, a new algorithm for image interpolation is proposed in this paper.
结合面法向刚度大小的参数对纵向振动模态的影响比对弯曲、扭振模态的影响显著；
The parameters reflecting normal stiffness have more obvious effects on extensional vibration mode than those on flexural mode and torsion mode.
通过分析，针对混凝土材料，提出了可给出弹体减速度时间历程解析解的法向膨胀理论。
For concrete material, a normal expansion theory was proposed by which some deceleration about time history of the projectile can be analytically given.
该文给出了基于主方向的平滑算法，并结合平均曲率流算法和法向滤波算法进行了改进。
The paper presents a smoothing algorithm based on the main direction combined with the mean curvature flow and the normal filter method.
在自适应细分过程中，用相邻面片的法向夹角作为控制误差来反映细分的逼近程度是否足够；
And in the each adaptive subdivision, we choose the normal angle of the adjacent faces as the control error to detect whether the approximation is sufficient.
优化性能指标要求在阵风扰动下驾驶员处法向过载、飞机姿态变化以及控制信号能量损耗最小。
The optimization requires the minimization of the vertical overload at the pilot′s seat, the attitude variation and the control energy consumption under the gust disturbance.
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