在本文中，我们要来看一下一些非营利组织是如何利用最新的在线地图应用和地理信息系统、通过地理信息相关数据帮助他们各自的网络社区开展工作的。
In this article, we'll look at some examples of nonprofits on the cutting-edge of online mapping and GIS, and how they utilize place-related data to benefit their respective communities.
地理信息系统软件主要应用于地理信息系统部门，所用到的坐标系与地图投影密切相关。
The GIS software is mainly applied to the department of Geography Information system. Its coordinate system is closely related with map projection.
本文研究了开发城市电信地理信息系统的相关技术，并给出了一个实际系统的开发原型。
In this paper, the related technologies of development of city telecom GIS are studied, and the development prototype of some practical system is given.
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