求翻译：基于铜川市近60年的降雨资料，采用模比系数差积曲线和降水距平数理统计方法进行降水变化特征分析的基础上，进一步对干旱情况进行研究。是什么意思？

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The Incheon City copper-based almost 60 years of rainfall information, poor than factor of the MPF schemes, and precipitation from normal curve of statistical methods precipitation changes based on the analysis of the characteristics that further research on the drought situation in.

Based on the Tongchuan city near 60 year rainfall material, uses the mold to accumulate the curve and the precipitation anomalous mathematical statistic method compared to the coefficient difference carries on the precipitation change characteristic analysis in the foundation, further conducts the r

Tongchuan city, based on nearly 60 years of rainfall data, uses the compression ratio differential curves and precipitation anomaly characteristics of precipitation variation analysis of the statistical method, based on further research on drought conditions.

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