本文在输沙实验的基础上，从研究水流结构着手，分析了水流和泥沙之间的相互作用关系，讨论了动床沙粒阻力和底沙输移规律。
Based on sediment transport experiments, the interaction between flow and sediment movement is analysed and the problems of grain resistance and bed load transport on plane movable bed are discussed.
利用近10000组资料，比较了包含本文公式在内的23种动床阻力计算公式，在已知流量、能坡和泥沙粒径时预测水深的计算精度。
The precisions of 23 movable-bed resistance equations, which contain the equations of this paper, have been compared by using near 10000 sets of measured data.
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