classification method of flood grades
...f Zero Flow of the Yellow River and Humanistic Consideratio 16 洪水等级的划分方法 Classification Method of Flood Grades 16 试论东汉以后黄河下游长期安流之原因 Reasons of Long Term Safety of the Yellow River After the Eas ..
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classification method of flood grades
洪水等级的分类方法
以上为机器翻译结果，长、整句建议使用 人工翻译 。