对地理要素的多尺度表达（多重表达）是当前多尺度空间数据库领域的研究热点之一。
The multi-scale representations (multi-representations) for geographical entities is one of research focuses in the field of multi-scale spatial database.
多比例尺gis中的数据库多重表达是当前国内外GIS领域的热点、难点问题之一。
Multiple Representation of Master Database (MRMD) in Multi-Scale GIS is one of the key problems in GIS realm.
研究并设计多重表达空间数据库的组织方式和空间数据的自适应可视化，并实现一个原型系统。
Research and design the organization of multi-representation spatial database, adaptive visualization of spatial data, and realize a prototype system.
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