The characteristics of flood disaster evolution in the Weihe River valley are analyzed. 分析了渭河流域洪水災害的環(huán)流形勢演變特征。
County of Gansu Province is located in the southeast, in the northern city of Tianshui, a tributary of the Weihe River gourd. 秦安縣位于甘肅省東南部,天水市北部,渭河支流葫蘆河下游。