查询词典 intersection point

An adaptive grid scheme controlling cell area is used to generated grids in the divergent section of symmetric annular nozzle, and the generated grids are used in the flowfield calculation through the uncoupled way. The elliptic equations are used to generate grids in three dimensional regions of FDN divergent section, the source terms used in the equations employ a mathematical form which is independent of the boundary shape and of the boundary grid point distribution, the free parameters contained in the source terms are determined by the two restraint conditions, the intersection angle of transverse grid lines with boundaries and the local curvature of the transverse grid lines at the boundaries, and the interior grid distribution controlled directly by the grid point distribution assigned on the boundaries is realized, it makes the grid more clustering near the nozzle wall. For the generated grids in the whole computational regions have a good smoothness and orthogonality, the accuracy of calculation in the flowfield is ensured.

对轴对称的环形喷管采用控制网格面积的自适应网格方法对扩散段部分进行了网格生成，并通过非耦合方式应用于喷管的流场计算中；对强制偏流喷管扩散段内的三维区域采用椭圆型方程进行网格生成，方程中的源项采用了与边界形状和边界网格点分布无关的数学形式，源项内的自由参数由横向网格线与边界的交角及横向网格线在边界处的局部曲率两个约束条件来确定，实现了由边界上的网格分布直接控制内部的网格点，使壁面附近具有较密集的网格，并且在整个计算区域内的网格都具有良好的光滑性和正交性，从而保证了流场计算的准确性。

What I want to do is making it used in the elementary geometry, to prove the point of intersection in the same line and lines intersect at the same point .

由于Desargues定理及对偶定理是建立在仿射平面上的，而本文要讨论的是如何将其运用到以欧氏平面为基础的初等几何中，证明点共线和线共点的问题。

The basic principle is based on spherical astronomy and elementary geometry of the trajectory mapping method based on the observation of a celestial body zenith distance, then the ship is located in order to sing the next point as the center of this satellite zenith distance of the ship's position as the radius of the circle, observing the same two objects, or objects at different times of the two observations, we can get two ship's position round, then the ship must have been a point of intersection of two ship's position on the circle.

其基本原理是建立在球面天文学和初等几何中的轨迹作图法基础上的，观测一个天体的天顶距，则航船就位于以星下点为圆心，此星天顶距为半径的船位圆上，观测两个天体或者不同时间同一天体的两个观测值，就可以得到两个船位圆，则航船一定在两个船位圆的一个交点上。

Point in polygon judge thought: point to do ray intersection and the number of polygons.

详细说明：点在多边形内判断，思想：点的做射线与多边形的交点个数。

First, an octree of the point cloudis constructed with a volume-based refinement method, and then the volume ofthe point-sampled surface can be estimated by using quasi-Monte Carlo methods.Based on the Cauchy-Crofton formula, the area of the point-sampled surface isalso calculated by counting the number of intersection points between the pointcloud and a set of uniformly distributed lines generated with low-discrepancysequences.

基于体积加细的方法构造点模型的八叉树，再利用拟蒙特卡罗方法完成体积计算；基于Cauchy-Crofton公式，通过计算点模型与均匀分布的直线集合的交点个数，完成面积计算。

For this reason the article advances the algorithm of point of intersection using geometrical information of line of intersection,meanwhile it satisfied the demands of high precision and speed,and having been applied successfully in the software developed by ourselves.

为此该文提出了利用交线的几何信息进行快速求交的算法，同时兼顾了快速和高精度两方面的要求，并已在作者自行开发的软件中得到了成功的应用。

It including the pitch point electric current equation andthe return route voltage equation two parts, former pointed out that,regarding any pitch point (3 or 3 above legs points of intersection),flows in and flows out the pitch point various electric currents algebra and is zero, this is the constant condition request, latter pointed out, regarding any closed path, each part of loss of voltage algebra and is zero, this is the electrostatic field ring circuit theorem result, two constituted the complete system of equations.

它包括沥青点电流方程强大的回路电压方程由两部分组成，前者指出，对于任何节点（ 3层或3条以上的腿分的交汇点），流入和流出草地点不同电流代数和是为零，这是恒定的条件要求，后者指出，对于任何封闭道路，每部分的损失电压代数和为零，这是静电场的环形电路定理的结果，构成了两个完整的系统方程式。

At present, our country majority cities have already established the many kinds of traffic signal control system, at the same time, the road intersection simple point signal control was still the main signal control way, timed control occupies proportion bigger, undulates a bigger road intersection in some traffic flows, to realize the signal fuzzy control to be imminent.

目前，就我国大多数城市而言，已经建立了多种交通信号控制系统，与此同时，交叉口单点信号控制仍是主要的信号控制方式，其中定时控制所占的比例较大，在一些交通流量波动较大的交叉口，实现信号模糊控制已迫在眉睫。

Computing any point of intersection of the polytope and the ellipsoid is used in the improved algorithm, instead of that of the intersection of two ellipsoids in ellipsoidal techniques, for calculating the solutions of some initial points where ellipsoidal techniques cannot ensure the existence of the solutions.

对某些采用椭球方法无法求取控制量的解的初始点，在改进算法中，采用了椭球与多面体任意交点求解的算法，代替了椭球方法中用椭球交集求解算法计算控制量。

The so-called cutter location point, the flat end mill tool axis refers to the point of intersection with the bottom tool; for ball-end milling is the ball part of the core; for tools is the tip; the drill is the drill point; for wire electrode cutting machine, it means that the axis line of the electrode surface and the focus of parts.

所谓刀位点，对于平底立铣刀是指刀具轴线与刀具底面的交点；对于球头铣刀是指球头部分的球心；对于车刀是指刀尖；对于钻头是指钻尖；对于线电极切割机床，则是指线电极轴心与零件面的焦点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了