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曲线坐标系

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The longitude curve and the latitude curve are the coordinate curve in the new geodetic coordinate system with length as coordinate parameter.

本论文中引入一种新型的大地坐标系,这种坐标系是以经纬线为坐标曲线,以长度量为坐标参数的新型坐标系。

In accordance with two independent rectangular coordinate systems, this paper discusses the complete coordinate formula of the middle spiral curve, the two groups' basic relation which is different to the general one and the significant intentions for averting chain breaking, which comes from the line parameter selected to compute the right coordinate of the curve points.

从二个独立的直角坐标系出发,分析中插缓和曲线点位坐标计算的完整模式,说明中插缓和曲线有别于一般缓和曲线的两种基本关系,指出有效选用连接参数m值在准确计算中插缓和曲线完整点位坐标避免曲线断链的重要作用,结合实例阐述任意测站坐标变换技术计算中插缓和曲线点位坐标的公式和应用效果

First, the paper introduces the moving coordinate system based on the curve tangent vector and the curvature component vectors. Next, the total curvature vector is composed and the osculating plane determined in the moving coordinate system. The curve bending is then calculated and the recursion analysis made on the osculating plane.

鉴于空间曲线上曲率采集面的变化,引入了由曲线切向量和曲率分量决定的运动坐标系,接着在运动坐标系中合成曲率矢量,确定密切平面,然后在密切平面中对曲线进行弯曲计算和运动坐标系的变换分析,并对相关公式进行了推导。

The 2-D average water depth mathematical model in orthogonal curve-linear coordinate system is used for the numerical simulation.

应用正交曲线坐标系下的二维水深平均数学模型,对大扩散角的正向泵站前池中设置隔墩前后的流态进行了数值模拟,以分析设置隔墩的整流效果。

The computational forms of conservative and nonconservative full—potential equations in an arbitrary non—orthogonal coordinate system have been developed by using simple and convenient mathematical derivation.

一、用简便易懂的数学推导,给出了一般曲线坐标系上守恒及非守恒型全位势方程的计算形式,对推导中引进的符号从物理上作了解释。

In this paper, a general, strain-consistent, third-order displacement field of shells is proposed. On this basis, the nonlinear theory of composite laminated shells including third-order transverse shear deformation and rotary inertia is developed. Hamilton's variational principle is used to derive the nonlinear static and dynamic governing differential equations and the corresponding boundary conditions of composite laminated anisotropic general shells under the orthogonal curvilinear coordinates. And the form of spherical shells is degenerated.

本文提出了一种最普遍的应变协调、三阶壳体位移场,在此基础上建立了考虑三阶横向剪切变形和旋转惯性的复合材料层合壳体非线性理论,用Hamilton变分原理导出了复合材料层合各向异性任意壳体在正交曲线坐标系下的非线性静、动力控制微分方程和相应的边界条件,并将其蜕化为球壳形式。

A set of mathematical model is developed and the scouring of aerated jet flow on river bed is simulated.

在贴体非正交曲线坐标系中,采用控制体积法对掺气射流对散粒体河床的冲刷进行了数值模拟。

The Navier-Strokes equation has been educed with tensor analysis theory in helical curved coordinate system.

用张量分析理论,推导出了正交螺旋曲线坐标系下N-S方程。

Finally, combining PDE with Differential Geometry, parametrically representing the surface, tensor based image processing techniques have been proposed, such as edge detection , morphological operation? implicitly representing the surface as the level-set of the higher dimensional function, the variational problems and partial differential equations that define maps onto the given generic surface have been discussed.

本文结合微分几何学,基于曲线坐标系下的微分算子将平面上的图像处理框架推广到曲面上,得到了参数化曲面上的图像处理框架,并给出了边缘检测和形态学运算的算例;在已知给定曲面的隐式表达时,探讨了定义在任意曲面上的偏微分方程,解决了任意曲面上数据场的扩散问题。

The relations of parametric equations with the route coordinates and the part coordinates are found out according to the curve model,the parametric equations of middle and side stakes in circular curve and easement curve are derived,thence the value of parameters is obtained,the solution procedure is got.

根据曲线模型,找出线路控制坐标系与局部坐标系坐标之间的参数方程关系,推出了缓和曲线及圆曲线中边桩坐标的参数方程,代入已知量求得参数的值,给出了求解步骤。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。