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   洪水的计算 的翻译结果: 查询用时:0.164秒
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洪水的计算
相关语句
  flood calculations
     The case study and statistical experiment showed that FPOT is not only rational but also can improve the accuracy of design flood calculations.
     实例计算和统计试验的结果表明,FPOT取样方法不仅比较科学合理,而且还可提高设计洪水的计算精度。
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  “洪水的计算”译为未确定词的双语例句
     Calculation Method of Design Flood for Small Watershed
     小流域设计洪水的计算方法
短句来源
     Moment estimation for parameters of Pearson Type-Ⅲ distribution and calculated frequency of design flood
     P-Ⅲ型分布参数的矩估计与设计洪水的计算频率
短句来源
     Discussion on Calculating Method of Design Flood of Ermenshan Reservoir
     二门山水库设计洪水的计算方法讨论
短句来源
     Base on investigation data and analysis of design flood in Wulanmulun river,the flooding section area and the flood discharge have decreased by 33 to 50 percent.
     根据乌兰木伦河考察资料和设计洪水的计算分析,在几处河床淤积和堆积严重的断面,采矿后河道行洪断面和行洪能力比采矿前减少了33%─50%。
短句来源
     The dividing flood-period, design flood and reservoir operating rules, is usually meeting in engineering design, construction and production.
     洪水分期的确定、设计洪水的计算以及水库调度方式的研究,是工程设计、施工和运行时经常遇到的问题。
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  相似匹配句对
     We also give a new correction factor to simplify the calculation of the Unstatistic.
     的计算
短句来源
     Calculation Method of Design Flood for Small Watershed
     小流域设计洪水的计算方法
短句来源
     SIMPIFIED CALCUCATION OF STORM FLOODS IN SMALL BASINS OF MOUNTAIN AREAS
     山区小流域暴雨洪水的简化计算
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     Mobile Computing
     移动计算
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Because of abundance of heavy rainstorms and dense population in China, the probable maximum flood should be used in the design criterion of dam safety. Some new ideas and methods put forward by Chinese hydrometeorologists and advances during the last 10 years are reviewed.

我国的暴雨洪水大、人口众、土坝多。为了保障人民生命财产和工农业的安全,许多大型、重要的中小型水库多采用可能最大暴雨洪水作为设计、校核的标准。在水文与气象人员的协作下,我国近十年来的可能最大暴雨与洪水计算方法得到一定的发展,提出了具有中国特色的方法、论文和一些专著,并开始了国际交流。本文综述这方面的进展并提出了几点看法。

Based upon the Monte Carlo experiments, the different parameter estimation methods are discussed and compared in the case of Pearson Type 3 distribution, including methods of moments, maximum likelihood, curve fitting, probability weighted moments and transformation methods. For the method of moments, six different bias correction factor of skewness are considered. Four various transformation methods and five different plotting position fromulae are also discussed. Through a large number of computation work,...

Based upon the Monte Carlo experiments, the different parameter estimation methods are discussed and compared in the case of Pearson Type 3 distribution, including methods of moments, maximum likelihood, curve fitting, probability weighted moments and transformation methods. For the method of moments, six different bias correction factor of skewness are considered. Four various transformation methods and five different plotting position fromulae are also discussed. Through a large number of computation work, it is suggested to use maximum likelihood (when Cs<2.0) or probability weighted moments (when Cs≥2.0) to estimate parameters and quantiles. The method of moments, with skewness corrected by Bobee and Robitaille's factor is a practical alternative. All of them are superior to the graphical curve fitting methods. The weibull plotting position formulae are biased and have large variance. It may be suggested that the flood design guidelines currently in use in China are in need of reevaluation.

本文应用Moute Carlo试验,对P-Ⅲ型分布的参数估计方法作了详细地比较,包括矩法、极大似然法、适线法、转换法和概率权重法。在矩法中又分析对比了六种不同的C_s修正公式。同时也考虑了四种不同的转换法,并着重讨论经验频率公式的选用。通过大量的计算工作,作者建议采用极大似然法(当C_s<2.0时)或概率权重法(当C_s>2.0时)来估算P-Ⅲ型的参数和设计洪水,用Bobee和Robitaille公式来计算C_s的矩法在实用上也是可行的。它们都要比适线法好。Weibull公式是有偏的,不宜继续使用,作者提议应该对我国现有的设计洪水计算规范作出重新的论证和评价。

The area above Chashang Section in the Beishi River Valley, a tributary of Fen River, is made up of forested and unforested lands in one and the other. Given the same raining condition, the two areas playdifferent roles in a flood forming process. The present paper deals withtheir influences upon flood formation respectively, and therefore leadingto an increased precision in calculating flood activities in this wholearea.

汾河支流北石河岔上断面以上流域由林地和无林地插花分布组成。在同样降雨条件下,流域内林地和无林地产生的洪水不同。因此,对于有森林影响河流的洪水,按林地和无林地分别进行其产流计算可以提高洪水计算的精度。

 
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