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该文根据绘制的黄河中游输沙模数与粗泥沙模数等值线图，研究分析了黄河中游多沙粗沙区输沙模数与粗沙模数变化规律。
According to the contour map of sediment transport modulus and coarse sediment modulus in the middle reaches of the Yellow River, the paper studies the variation law of sediment transport modulus and coarse sand modulus in the middle and large reaches of the Yellow River.