根据给定的水流及泥沙条件，预报床面可能出现的沙波形态，是一个重要的研究课题。
According to given flow and sediment conditions, predicting possible bed form in river bed is an important problem.
坡耕地作为重要的侵蚀产沙区，揭示其土壤侵蚀规律和泥沙运移方式，对建立土壤侵蚀预报模型、加强土地管理防止土壤退化具有十分重要的意义。
It is important to reveal the law of soil erosion and develop soil erosion forecast model, which has a bearing on preventing the loess of water and soil.
探讨雨滴打击下薄层漫流的输沙机理，为建立细沟间薄层水流泥沙输移预报模型提供理论依据。
This study had an important significance to set up the predicted model fallow overland flow on the Loess Plateau.
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