提出并实现了一种针对近似平行沟渠群的典型化方法。首先,建立沟渠的方位关系图,通过生成关系图中各连通分量的极大完全子图,提取......

[Objective] The research aimed to reduce emission load of the farmland runoff by using ecological ditches and pond. [Met......

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The Atlas cedar (Cedrus atlantica) is one of the more valuable reforestation species in the Mediterranean areas. But thi......