It's very effective to get the topological relationships between distribution destinations and a physical distribution center when we use the road net database.
采用道路网数据库对电子地图进行存储，对于得到地图上若干送货点及配送中心的拓扑关系十分有效。
It's very effective to get the topological relationships between distribution destinations and a physical distribution center when we use the road net database.
采用道路网数据库对电子地图进行存储，对于得到地图上若干送货点及配送中心的拓扑关系十分有效。
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