A special case of information systems where the database consists of observations on spatially distributed features, activities, or events, which are definable in space as points, lines, or areas.
一个空间信息系统的例子，数据库由对空间分布特征、活动性、事件进行观察所组成，在空间可定义点、线、面。
Symmetry breaking of temperature field in spatially distributed pure dissipative systems induced by chemical reaction diffusion heat conduction couplings is analyzed in this paper.
分析了由于化学反应-扩散-热传导耦合而导致的非等温非均匀体系中温度场对称破缺。
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