drought frequency 干旱频率 ; 旱情频率 ; [气候] 干旱频数 ; 干旱当量
drought frequency i ndex 旱频率指标
Then, they followed with more specific, quantifiable questions about phenomena such as drought frequency and average temperature.
之后,又询问了些关于洪水周期、平均气温等,可用具体数字来回答的问题。
Drought, flood, frost and hail are major meteorological disasters with the characteristics of high frequency, wide distribution and serious conditions etc. in Shandong Province.
干旱、洪涝、霜冻、冰雹是山东省最主要的气象灾害,具有频率高、范围广、灾情重等特征。
The frequency of extreme drought in the dry period is much higher than that in the wet period.
在气候处于少雨时期,极端干旱频率远高于多雨时期。
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