spatial data exchange center 空间数据交换中心
To find out, issue a spatial data query that reports all cities such that the bounding box of the tsunami line intersects the geographical city center.
为此，发出一个空间数据查询，搜索其中心包含在海啸线内的所有城市。
The geo-metadata query system is an important component of the spatial data exchange center.
地理信息元数据查询系统是空间数据交换中心的重要组成部分。
This paper provides two patterns of spatial data sharing service, one is physical data center, and the other is logistic data center.
本文提出了两种空间数据共享服务模式：物理数据中心模式与逻辑数据中心模式。
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