求翻译：摘要：根据现有的短历时暴雨资料系列，在作频率分析时，推求含有特大值的百年一遇或千年一遇的设计频率，任意性较大。如通过调查、考证，合理确定特大暴雨的重现期，这样可以提高了暴雨系列的代表性，使计算成果更加合理、准确，就像在频率曲线的上端增加了一个控制点。是什么意思？

Abstract: According to existing data series of short duration rainstorm, for frequency analysis methods for deducing the hundred years, with the large value, or QianNianYiYu design frequency, any larger. Through surveys, research, and rationally determine the return period of heavy rainfall, this ca

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Abstract: According to the existing short lasted rainstorm material series, when makes the frequency analysis, as soon as the inquire includes the especially big value hundred years to meet or the design frequency which as soon as the millennium meets, the haphazardness is big.If through the investi

Summary: according to the current series of short duration storm data, frequency analysis, deducing contain large values of a century or Millennium design frequency, arbitrary large. Such as through surveys, research, rational determination of return period of torrential rain, which can improve the

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