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本文根据黄河下游近二十年（１９７３～１９９０年）不同洪水的实测资料，分析了各级洪峰在下游的冲淤特点，指出了不同来源区洪水含沙量的沿程变化规律。
Based on the measured data of different floods in the lower reaches of the Yellow River in the recent two decades (1973 ~ 1990), this paper analyzes the scouring and silting characteristics of the flood peak at all levels and points out the variation of the flood sediment in different source areas.