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.

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。

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Therefore, some sediment transport theories derived from these energy balance equations of sediment-laden flow, such as sediment transport intensity, resistance in movable bed, etc.

从而从这些有缺陷的能量平衡方程所得到的一些泥沙运动理论，如输沙强度、动床阻力等，就难免在理论上存在一定的不足。

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The results of laboratory show:effect of uniform-distributed powder in the packed bed on the resistance to fluid flow is superior to that of concentrated powder.

实验结果分析表明：在散料体填充床中粉体均匀分布对气流阻力的影响要优于集中分布。

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