求翻译：在地图数学中，坐标转换是空间实体的位置描述，是从一种坐标系统变换到另一种坐标系统的过程。通过建立两个坐标系统之间一一对应关系来实现。是各种比例尺地图测量和编绘中建立地图数学基础必不可少的步骤。在地理信息系统中，有两种意义的坐标转换，一是地图投影变换，即从一种地图投影转换到另一种地图投影，地图上各点坐标均发生变化；另一是量测系统坐标转换，即从大地坐标系到地图坐标系、数字化仪坐标系、绘图仪坐标系或显示器坐标系之间的坐标转换。是什么意思？

Mathematics on the map, coordinate transformation is the location of the entity description space is transformed from one coordinate system to another coordinate system in the process. Through the establishment of one to one relationship between two coordinate systems to achieve. Is a compilation of

In mathematics, the map coordinates of the conversion is a spatial entity location description, is from a coordinate system to another coordinate system transformation process. Through the establishment of two coordinates 11 correspondence between systems. A variety of scaled map map building survey