历年气候干旱指数平均为0.002，极值出现在下游的民勤地区，达0.581。

The average arid index was 0.002, with a maximum of 0.581 in the lower Minqin region.

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历年气候干旱指数平均为0.002，极值出现在下游的民勤地区，达0.581。

The average arid index was 0.002, with a maximum of 0.581 in the lower Minqin region.

youdao