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中文摘要：
以1950-2002年实测输沙资料为基础，研究了黄河下游的输沙量和排沙比变化特点，参照能够反映黄河特点的考虑上站含沙量的输沙率公式，建立了黄河下游逐河段的输沙量和排沙比计算公式。实测资料的验证表明，本文建立的输沙量和排沙比计算公式具有较高精度，可以作为分析水沙变异条件下黄河下游河道泥沙输移规律的参考。
英文摘要：
This paper presents a study on the characteristics of sediment transport and sediment delivery ratio in the lower Yellow River based on data of runoff and sediment load measured from 1950 to 2002. Formulas for sediment load and sediment delivery ratio were developed based on the sediment discharge equation which includes the incoming sediment concentration at the upstream. Verification by the measured data indicates that the developed formulas for sediment load and sediment delivery ratio have a very high accuracy. These formulas can be used to further study sediment transport processes for the changed flow and sediment conditions.
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