D-GIS has been a pop field of geo-information research. 对已经成为地理信息领域研究热点的三维地理信息系统进行了较为深入地探讨。
The two so-lutions have all been implemented and run in our GIS. 本文的两种方法均已实现,并使用在我们开发的GIS系统中。
GEOGRAPHICAL information systems (GIS) are computer systems that use spatial and topographical data as an element, usually in a database.
David Rhind, director general and chief executive of Ordnance Survey of Great Britain. 'GIS underpins such decision-making and its growth is astonishing.
One of four current GIS projects, this saves time and money, accelerating every property purchase or sale made by the council.