地图投影转换 meaning in English

maprojection transformation

Application of gis technology is discussed in large engineering project , the basic functions of gis are realized , some technologic problems , such as map projection conversion , integration of spatial and attribute database , theme map and 2 . 5 - dimensioanl gis , etc , are solved , and the above researches are validated , relying on the instance
依托这个实例，探讨gis技术在大型工程项目中的应用，实现gis基本功能，解决gis中的地图投影转换、空间数据库与属性数据库结合、专题地图、 2 . 5维gis ?三维地质模型等技术问题，并验证以上研究。