...方案; 山区河流 [gap=980]Key words: bank protection; reconnaissance method; investigation plan;river in mountainous area ...
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In the mountainous watershed of the Heihe River, the runoff coefficient is much larger than that of the whole arid area, but it is still less than the average value over the whole country.
黑河山区流域径流系数远比干旱内流区的平均值大，但要小于全国的平均径流系数。
Qinghai province is located in the north shore of the Yellow River Longhua is a mountainous area, an average elevation of 4000 meters;
位于青海省化隆境内的黄河北岸宗喀吉热山区、平均海报4000米左右；
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