对于森林流域和灌木流域，其多年平均径流系数主要受多年平均降水量、多年平均蒸散量和平均坡度共同影响；
For forest watershed and shrub watershed, the annual mean runoff coefficient was affected by mean annual precipitation, mean annual evapotranspiration and mean slope grade.
对黄河河源区多年平均和雨季降水量、年际径流量进行分析。
The annual average and rain season precipitation and yearly runoff of the source regions of the Yellow River were analyzed.
将1956 ~ 2000年平均降水量作为多年平均年降水量，全区多年平均年降水量为666.1毫米。
According to 45 years (1956-2000) date of precipitation in the area, the annual mean precipitation is 666.1mm.
将1956 ~ 2000年平均降水量作为多年平均年降水量，全区多年平均年降水量为666.1毫米。
According to 45 years (1956-2000) date of precipitation in the area, the annual mean precipitation is 666.1mm.
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