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basic control survey of river basin
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basic control survey of river basin
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水利工程测量
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basic control survey of river basin
流域基本控制测量
为满足江、河、湖等流域的规划、治理、防洪体系建设及流域内经济社会发展,在国家高等级大地控制网基础上开展的基本控制网测量。是在流域内对国家大地控制网的补充和加密,是流域水利水电工程建设、流域信息化管理的测绘基准和坐标框架。
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