洪水
- 与 洪水 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Weng Wenbo firstly pointed out that the occurrence of a floodwater has the commensurability ,and applied the principle of commensurability to the prediction of large natural hazards.
分析了上两个世纪发生在淮河的洪水事件的可公度性,根据其可公度值及其黄金分割点指出1991年与2003年淮河洪水的不可避免,最后讨论了可公度性的局限及淮河洪水可公度值的可能机制。
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The generant frequency of flood disaster is high and distributing field is wild, the 50 percent population and 70 percent properties are distributed at the threaten field of flood disaster in China. Flood disaster has caused a huge amount of economical losses and this losses has an increasing trend.
在我国,洪水灾害发生的频率高,分布区域广,全国约有50%的人口,70%的财产分布在洪水威胁区内,每年因洪水灾害造成的经济损失十分巨大,而且呈上升趋势。
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The results are displayed vividly in virtual scene which is established with program language of Visual C++ and OpenGL. At present flow field simulation manner mostly has time delay, deficient controllability, so this paper brings forward the methods of drawing flow velocity vector graphics with OpenGL in the 3D virtual scene to simulate and analyze flow field. At the same time cross section and flood analysis are completed. Accordingly, it assists flood flow field visualization and provides the more effective analysis method for the flood mathematics model research and application.
针对目前流场模拟方式大多存在模拟时间滞后、缺乏可控性等问题,本文提出基于水力学模型计算得到的流速数据,在三维虚拟场景中利用OpenGL绘制洪水流速矢量图的方法进行流场动态模拟分析,在流速变化较大区域和需要重点观测区域,提取断面,分析断面和洪水淹没情况,从而解决洪水流场数值可视化的问题,为洪水数学模型的研究与应用提供更加直观有效的分析手段。
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Ased on the fact, the basin flood forecasting system above the Wanan Hydropower Complen of Ganjiang water system set up and improved the rainfall-runoff correlation, the ad-vent of freshet, the up-downstream water stage correlation and the Xinanjiang Medel etc.
赣江水系万安水电枢纽以上流域洪水预报系统从防汛实际出发,建立健全了降雨径流相关、洪水演进、上下游水位相关、新安江模型等,构成了全流域自上而下的一套实时联机预报系统,用于实时洪水预报和模拟防洪调度分析等作业任务效果良好
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Using the map algebra function of the ARC/INFO system,a map of flood hazard assessment for Xiang River Basin is constructed by taking various natural factors,such as precipitation,topography and historic flood frequency,into consideration.
在综合考虑降雨量、地形以及历史上洪水灾害发生频次等自然因素的条件下,利用地图代数分析得到了湘江流域洪水灾害危险性评价图;在综合考虑人口密度、耕地面积百分比、人均GDP和单位面积水库和塘坝容量等社会经济指标的基础上,利用模糊综合评判法得到了湘江流域洪水灾害脆弱性评价图。
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As a result, it is very convenient to describe flood hydrograph at any site or any instant in terms of one dimensionless curve with the similarity.
提出了洪水过程的自相似性理论,运用群论方法论证了溃坝洪水的自相似解结构,据此可由一条曲线来表达任意时刻、任意位置的洪水过程。
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Deep studies on the Holocene loess-palaeosol sequences and the slack water deposits profiles, identifying and obtaining the information of paleoflood recorded in them, ensuring the amount, frequency, time and scale of the extreme Holocene paleofloods, are very helpful in revealing the characters and rules of the environment change during Holocene in this drainage basin and the middle reach of the Yellow River.
深入研究古遗址周围的黄土——古土壤地层和古洪水平流沉积物,识别和获取蕴藏其中的古洪水信息,并以此确定全新世特大古洪水事件发生的次数、频率、时间及规模,有助于揭示伊洛河流域及黄河中游地区全新世环境演变的特点和规律。
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From the analysis of the historical and measured data, some tendencies of flood in Zhejiang in the global change are predicted: 1low water year will take the upper hand in ten years or more, the global change will make the temporal and spatial changes of flood in Zhejiang more violent, and the flood disasters in coast area more serious.
中文摘要:根据历史和实测资料分析,对于全球变化下浙江近期洪水的运作大势,可得如下几点认识:(1)在未来的十几年之内,浙江省将处在枯水年占优势的阶段,但全球变化将使浙江洪水的时空变化更为剧烈,使沿海地区的洪水灾害更为严重。
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The Modern scholors generally regard Dayus watercontrol project as a legend instead of historic factBy the data of uranology,the author firstly demonstrates that there were quite a lot of natural disasters about 4000 years ago caused by the nine planets in the solar system moved into one line,and among these disasters ,floodwater was the most serious oneSecondly,with the new discoveries of the geographic and archaeological works...
现代学者多将大禹治水视为中国历史上的神话传说。本文先引天文资料证明距今4000年前后确因九星地心会聚引发了各种自然灾害。在这些灾变中,尤以洪水为大。再引地理、考古资料证明此次洪水在黄河下游地区实为距今4000年前后的黄河南北改道,而改道又加剧了洪水泛滥。然后勾稽历史文献,从典籍中寻求黄河改道的线索。
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On the basis of analysis of 116 samples in grain size from high valley flat section in Xianyang and historical book material of Weihe migration time, we knew that the delamination of 120 years' flood deposition of Weihe River is obvious and can be regarded as an indicator of flood and change.
根据咸阳高漫滩XY剖面中116个样品的粒度分析,结合历史文献记载的年代资料得出,渭河约120年来形成的高漫滩洪水沉积分层明显,对洪水的变化反映清楚,分辨率高,能够作为很好地指示洪水变化的指标。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。