这篇文章主要研究局部坐标系统转换。这个问题涉及的数学知识非常简单，但是很复杂。
This part delves into the local coordinate system transformation. The mathematics of this problem are simple, but elaborate.
转换是直接修改坐标系统，这样左上角会发生偏移。
Translation simply changes the coordinate system so that the upper-left corner exists at a new offset.
接下来，旋转和恢复这个矩阵；然后，使用translate设置与当前坐标系统的偏移量(这是从之前旋转和转换的矩阵应用的)，并绘制一个红色椭圆。
Next, rotate and store this matrix; then, offset from the current coordinate system with translate (which is applied from the previously rotated and translated matrices), and draw a red ellipse.
viewport是一个人造的坐标系统，可以转换成图像的物理坐标系统。
A viewport is an artificial coordinate system that is translated into the physical coordinate system of the image.
将来自不同国家的数据源进行数据转换、投影变换和误差校正，转换为统一的数据格式和投影坐标系统。
The data from the data sources of different countries are converted into the unifying data format and projection coordinates system by data conversion, projection conversion and error correction.
详细研究了坐标系统的转换，处理图像数据的过程，体素排序等。
Particularly the conversion of coordinate systems, processing of the image data, and voxel ordering are studied.
摘要：坐标系统的选择和转换是工程测量中的一个十分重要的问题。
Abstract: : the choice of coordinate system and the measurement of the conversion of project is a very important problem.
搜索波束稳定技术及相关坐标系转换是装备了车载搜索雷达的自行防空武器系统的关键技术之一。
The search beam stabilization technique and the concerned coordinate system conversion are key techniques of self-propelled antiaircraft weapon system equipped with the vehicular search radar.
坐标模型转换包括地理坐标系统和投影系统的转换。
The conversion of coordinate model includes the conversion of geography coordinate system and the conversion of projection system.
手持GPS使用的坐标系统是WGS- 84坐标，在普通测量中，可使用5参数法转换到54北京坐标系或80国家坐标系。
The coordinate system GPS handset used is WGS-84 coordinate system, in ordinary surveying, 5 parameters method can be used to converse it to 54 Beijing or 80 state coordinate systems.
GIS中的空间参照系统是GIS平台中的重要组成部分，内容包括各种坐标系统的转换和地图投影，故也称为投影变换系统。
As an important part of GIS platform, spatial reference system includes coordinate transformation and map projection, also named as map projection transformation system.
首先分析了永磁同步电动机在不同坐标系下的数学模型及其之间的转换，并搭建了系统的矢量控制模型。
Firstly, analyzes the PMSM mathematical model at different coordinates and the conversion among them, then, build the system model for vector control.
因此，坐标系统需要从逻辑坐标系转换到物理坐标系上去。
The coordinate system must therefore be mapped from logical Cartesian coordinates to physical screen coordinates.
本文介绍如何求解系统转换参数，将WGS-84坐标转换为我国目前使用的是1954年北京坐标系或1980年国家大地坐标系。进而可以利用GIS技术建立活断层信息管理数据库系统。
In this paper, how to transfer WGS-84 coordinate system into Beijing 1954 geodetic system or state 1980 geodetic system, and build up information managing system of active faults by GIS.
捷联惯导系统利用相对导航坐标系角速度计算姿态矩阵，把雷体坐标系轴向加速度信息转换到导航坐标系轴向并进行导航计算。
The platform inertial navigation system used peg-top to stabilize the loop through platform and control the angular speed of the platform track navigation coordinate system.
GPS测量采用的是W G S- 84坐标系统，阐述如何将GPS测量成果转换为高斯正投影成果的应用。
What GPS measurement used is WGS-84 coordinate system, and the application of transforming GPS measurement results into Gauss positive projection is...
GPS数据采用WGS- 84坐标系，而电子地图往往采用北京54坐标系，因而，如何将WGS - 84坐标转换为北京54坐标成为系统必须解决的一个关键问题。
GPS data adopts WGS-84 Coordinate, while the digital map adopts Beijing 54 Coordinate. So it is a key to solve that translate the WGS-84 Coordinate to Beijing 54 Coordinate.
GPS数据采用WGS- 84坐标系，而电子地图往往采用北京54坐标系，因而，如何将WGS - 84坐标转换为北京54坐标成为系统必须解决的一个关键问题。
GPS data adopts WGS-84 Coordinate, while the digital map adopts Beijing 54 Coordinate. So it is a key to solve that translate the WGS-84 Coordinate to Beijing 54 Coordinate.
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