Setting up GM(1,1) grey topological model groups and through analyzing conclusion, it indicates that such model is a kind of comparatively ideal method in predicting annual surface flow.
建立GM（1，1）灰色拓扑模型群，通过结论分析，表明该模型在年径流预报中为一种较为理想的方法。
Setting up GM(1,1) grey topological model groups and through analyzing conclusion, it indicates that such model is a kind of comparatively ideal method in predicting annual surface flow.
建立GM（1，1）灰色拓扑模型群，通过结论分析，表明该模型在年径流预报中为一种较为理想的方法。
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