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.
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.
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.
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