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  AcidRainfall

 Sigma KEE - AcidRainfall

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酸雨
AcidRainfall 是 Raining 的子类别， 这是当落下 的雨含有足够致害分量的 SulphurDioxide、 nitricOxide 或 NitrogenDioxide。酸雨的标准值是低于 5pH。
Relationships      
Parents 降雨 Raining is a Precipitation Process in which Water falls in a Liquid state. The size of an raindrop is between 0.1-9 Millimeter in approximateDiameter.


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