A number of cities in the south had an acid rain frequency exceeding 80%.
许多南方城市的酸雨频率已经超过了80%。
Probe into Ningde city fall acid rain frequency and relation of season in the rain.
探讨宁德市降雨中酸雨频率与季节变化的关系。
The rainfall over North China during rainy seasons is mainly influenced by the heavy rain frequency and the excessively heavy rainfall contribution.
华北汛期降水量的多寡主要受其汛期大雨的频率和暴雨的贡献率影响。
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