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本文根据影响瀑布后退的主要因素和实地考察与研究，对以历史资料为据所测算的壶口瀑布后退速度问题提出了一些不同意见和论析。
Based on the main factors affecting the regression of the waterfall and the field investigation and research, this paper puts forward some different opinions and analyzes on the historical data based on the measured retreat velocity of the Hukou Waterfall.