Based on data in the past, it extracts the statistical regularity that a regional precipitation possesses.

据过去的资料提取一个地区降水量所具有的统计规律性，其代表了该地区降水量的本质特征。

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Based on data in the past, it extracts the statistical regularity that a regional precipitation possesses.

据过去的资料提取一个地区降水量所具有的统计规律性，其代表了该地区降水量的本质特征。

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