坐标变换

To analyze the feature of dam-break flow in natural channel bends,channel-fitted orthogonal curvilinear coordinate system is established and two-dimensional shallow water equations are derived in this system through coordinate transformation,simplification and depth integration.

为分析溃坝波在天然弯曲河道中传播的特点，建立了跟踪河道走向的正交曲线坐标系，并通过坐标变换、简化和水深积分推导出了曲线坐标系下的二维浅水方程。

By coordinate transformation,specifically,by using orthogonal coordinate system to obtain vertical high resolution ratio in superstratum water of Beibu Gulf and making use of Sigma coordinate system to match terrain in bottom water,the authors intend to set up Beibu Gulf Physical Oceanic Model and use the model to simulate partial tide M\-2,partial tide K\-1 and partial tide O\-1 respectively.

采用坐标变换方法，在北部湾上层海洋采用正交坐标系以获得垂向高分辨率，在底层水体采用 Sigma坐标系以拟合地形，建立北部湾的物理海洋模型，并利用建立的模型分别模拟北部湾的 M2 、K1 、O1 分潮。

This paper stated the application of parallel link mechanism in modern machine tools,set up the error analysis as to parallel link mechanism in the virtucal-axis machine tool,derived the double triangular error equations of parallel link mechanicsm in its horizontal posture,analyzed the linearity and non-singularity of the error equations,thus giving the normal splution to the horizontal posture error.

该文对并联机构在现代机床上的应用作了论述，建立了虚拟轴机床并联机构的一种误差分析方法，应用坐标变换原理导出了双三角并联机构水平姿态时的误差方程组；分析了误差方程组的线性和非奇异性，给出了水平姿态时的位姿误差正解；对工作空间中心线的误差分布规律进行了仿真，绘制了其误差分布曲线。

Firstly basic interpolations are obtained from planar circle interpolation by the point by point comparison.

首先使用逐点比较法作平面圆弧插补获得基本插补量，然后以三维坐标变换将基本插补量变换成为空间椭圆的插补量。

Reducing the scale may be considered to be part of transforming geographic coordinates to plane coordinates.

另外，还原地图比例尺也可以被认为是坐标变换过程的一部分。

The plane adopts the joint method of both the finite element and the finite difference to divide plane domain by means of irregular triangular net in order to fit topography and coastal line complicated sea zone; Vertical application σcoordinate conversion and the finite difference method.

平面采用有限元法和有限差分法相结合的方法，用不规则三角形网格剖分计算域，以适应地形和岸线复杂的海区；垂向应用σ-坐标变换及有限差分法。

This paper analyses how the electricity vector orientation of the normal incidence plane polarized light or garden polarization light is altered by quarter wave plate by making use of Jones matrix of polarizer.

用坐标变换法解出偏振器件一般情况下的Jones矩阵，利用偏振器件的Jones矩阵分析四分之一波片对正入射平面偏振光和园偏振光的偏振态的改变，指出获得和判断椭园和园偏振光的方法。

Restoration of forward motion blurred image based on polar coordinates.

基于坐标变换的相向运动图像模糊复原方法。

The method that I used in the project is proposed in 1997, Mann gave techniques for automatically finding the eight-parameter projective coordinate transformation that relates two frames taken of the same static scene.

在项目中我用到的方法是 1997年提出的，曼恩给出了一项自动寻找到八个参数的坐标变换，将采用同一场景的两幅拼接起来。

Projective transformation of curved surface and plane intersecting line are completed based on vector algebra,adopting space coordinate transforming method.

方法基于向量代数，采用空间坐标变换方法，建立了圆锥面与平面相交中截交曲线的形成特点，讨论了二次曲线的构成的数学原理。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。