Spatial index is a key issue in massive spatial data processing.
海量空间数据的处理需要通过空间索引来提高效率。
Spatial Database Engine; Spatial Database Management System; Seamless Integration of Multisource Spatial Data; Adjusting and Optimizing; Massive Spatial Data.
空间数据库引擎；空间数据库管理系统；多源空间数据无缝集成；调整和优化；海量空间数据。
The progressive transmission strategy is considered to be an effective way to balance contradiction between scheduling the massive spatial data and the real time user experience.
渐进传输被认为是解决目前海量空间数据传输与实时用户体验之间矛盾的有效方法。
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