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中文摘要：
线性矩法在水文频率分析中具有理论优势，但因为计算复杂而实际应用较少。为使该法在实践中得到推广应用，开展了线性矩法在水文频率分析中的实用化研究，设计开发了基于线性矩法的水文频率分析软件。该软件采用数值积分算法计算有关概率分布的函数值，有效提高了成果的精度。主要介绍研究思路、关键技术及其应用实例。
英文摘要：
The L-moment method has theoretical advantages in hydrologic frequency analyses, but less practical application because of its complexities in calculation. In order to popularize its application, the practical research on L-moment method of hydrologic fre- quency analyses is carried out, and hydrologic frequency analysis software based on the L-moment method is developed. The proba- bility distribution functions are calculated by numerical algorithms in the software, and the accuracy of the results are effectively improved. This paper introduces research ideas, key technologies and application examples.
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