The construction of cities' basic geography database is a system engineering, and relates to various knowledge and theories.
城市基础矢量数据库建设是一项系统工程，项目建设涉及到方方面面的知识和理论。
Geographic information system (GIS) is a computer application system which combines geography information with engineering information.
地理信息系统是一种将地理空间信息同工程信息相结合的计算机应用工程系统。
Geographic information system (GIS) is a computer application system which combines geography information with engineering information.
地理信息系统是一种将地理空间信息同工程信息相结合的计算机应用工程系统。
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