An efficient retrieval method of land cover data based on HBase and static multi-level grid index(基于HBase与静态多级格网索引的地表覆盖数据高效检索方法) gan ZHULinying(祝琳莹), ZHANGFeng(张丰), DUZhenhong(杜震洪), LIURenyi(刘仁义), ZUOYuqiang(左玉强)

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