flood characteristics 中文意思是什麼

flood characteristics 解釋
洪水特性
  • flood : n 1 洪水，水災。2 溢流，漲水，潮水最高點，泛濫，洶涌。3 〈詩〉河，湖，海。4 充溢，豐富；大量，一...
  • characteristics : 產品性能描述
  1. On the basis of collecting and arranging a large amount of projects experience, conbined with construction diversion flood passing measures design and hydraulic model test of lihua hydraulic pawer station in 1995 and 1996, the dissertation studies the issues related with characteristics of concrete face rockfill dam including the selection of construction diversion flood passing standard and measures, flood passing during construction period and embankment stage, coffer dam design, construction scheme and general schedule etc. and present preference for project construction

    本文在搜集整理大量工程經驗的基礎上，結合蓮花水電站在1995年及1996年導流渡汛工程措施設計及水工模型試驗，對混凝土面板堆石壩的導流渡汛標準、導流方式及其選擇、施工期渡汛及壩體填築分期、圍堰設計以及施工方案及總進度等與混凝土面板堆石壩特點有關的問題進行研究，為工程建設提供一定的參考。
  2. The dynamic characteristics of wharf piles subjected to lateral load is analyzed, used the dynamics theory. it gives an analysis and research to the functional mode of wharf foundation pile under flood tide torrent

    論文對水平荷載下碼頭基樁的動力特性進行分析，用振動力學理論對碼頭施工中的基樁進行動力分析。
  3. In recent years, the water - saving and control irrigation technique of rice has diverted from plot experimental and demonstration to lare scale. and has got remarkable economic and social benefits. amed at the characteristics of this irrigation area, optimal selection for water - saving techniques of rice, deciding the amout of leaching water and irrigation modles, investigating the adaptability of the water - saving and control irrigation technique in saline land. studying the increase in production mechanism of the technique are important to extend the technique, to better and develop saline land as well as slick spots. according to the results of field experiments, optimization study was conducted on the water - saving irrigation technique of rice in saline land, the effects of different water - saving irrigation techniques on the physiological indexes and yield of rice were systematically analyzed. by using mutiplepurpose fuzzy optimization method, better. water - saving irrigation technique was selector out, that is. the control irrigation technique in rice. the mechanism of it was analyzed from the aspect of the physiological and ecological saving water of rice to provide the implemental process and technical point ; throgh the quantitive analysis and comparision on control irrigation and control class ( flood irrigation ), high production and quality mechanism of the technique was analyzed in terms of physiology indexes of rice, the variation of soil moisture, the pest resistance and the lodge resistance, the change of soil temperature in paddy fields. the yield constitutive factors, the quality of rice and so on. in saline land. control irrigation and intermittent leaching modles were adopted to validate the adaptability of the technique in irrigation of rice in saline land, to analyze rice ' s physiological - ecological indexes and the change of soil salt content under the conditions of control irrigation leaching of rice and and to provide control irrigation and combined modle of intermittent leaching to adapt to different conditions

    本文從試驗及試驗資料入手，取得以下主要成果和結論：對鹽堿地水稻節水灌溉技術進行優化研究，系統地分析了不同節水灌溉技術對水稻生理指標及產量的影響，採用了多目標模糊優化的方法，對灌水技術進行綜合評判，優選了節水灌溉技術，論證該地區宜採用水稻控制灌溉技術；闡述控灌技術通過調節和控制水稻的需水規律，降低水稻高產情況下的無效水量消耗，從水稻生理、生態節水兩方面分析了控灌技術節水機理，針對性地總結出水稻各生育期實施節水控灌技術的步驟及技術要點；通過控灌與淹灌的定量對照比較，從根系、莖蘗、冠層葉片及綠葉動態到株高，土壤水分變化，抗病蟲害、抗倒伏能力，稻田土溫變化，產量構成因素及稻米品質等諸多方面進行動態比較，分析控灌技術高產優質機理；在鹽堿稻地採用控制灌溉+間歇淋洗模式，跟蹤測試田間水鹽變化狀況，驗證控制灌溉技術在鹽堿地區水稻灌溉中應用的適應性，通過分析水稻控制灌溉淋洗條件下水稻生理生態指標，提出優化控制灌溉+間歇淋洗組合模式，為進一步在高礦化度地區試驗水稻控灌技術奠定基礎。
  4. Climatological characteristics, which can provide some drought or flood years with large - scale background, are investigated for large - scale water vapor transport over asian - australian monsoon region based on vertically integrated water vapor flux by pentad from 1980 to 1997. at the same time, the differences of moisture transport over the yangtze river basin between drought and flood and the moisture budgets over eastern china from april to september are examined. major results are as follows : i

    使用1980 ? 1997年垂直積分的整層水汽輸送通量資料，從氣候平均的角度分析了亞澳季風區大尺度水汽輸送演變和偏南風水汽輸送在東亞地區推進的氣候特徵，為研究異常年份旱澇事件的產生提供了相應的大尺度背景；同時還討論了長江流域旱澇年水汽輸送的差異以及4 - 9月我國東部各區域的水分收支情況。
  5. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  6. The characteristics of summer drought and flood in northeast area of china

    近40年長江中游地區旱澇特點分析
  7. The statistical characteristics of the sub stage maximum tidal level in bridge reach are analyzed. and found that the maximum tidal level in flood season should correct the inconsistency

    論文分析了橋位河段分期最高潮位序列的隨機特性，發現需對徐六涇站汛期最高潮位進行修正，通過研究提出了對本河段行之有效的一致性修正方法。
  8. In recent years it is more severe because of temperature changes, mankind activities, scouring and silting. the special geographical position, hydrometeorological condition, river course characteristics are main reasons for ice flood

    由於近幾年來氣溫的變化、人類活動、河床沖淤等流域環境的變化，使得凌汛的威脅不僅依然存在，而且發生冰害的河段有所增多，影響范圍隨之擴大。
  9. This article firstly explains the state of flood control in china, basic characteristics of flood, criterion and evaluation of river flood defense

    本文首先論述了我國防洪減災的基本形勢、洪水災害的基本特點、江河防洪標準及其評價。
  10. Analysis on flood characteristics and flood resources of the middle yellow river

    黃河中游洪水特性及洪水資源化分析
  11. Because of the location and river characteristics, in winter, the ice flood is very serious and often cause ice flood disaster in inner mongolia reach of the yellow river, so it is one of the most important reaches of preventing ice flood

    黃河上游內蒙古河段，由於其所處的地理位置及河道條件等因素，冬季冰情嚴重，經常產生凌汛災害，為黃河上重點防凌河段之一。
  12. When ddos happens, the flood presents some characteristics, such as the statistical distributing. although an attacker can forge any field in the ip header, he or she cannot falsify the numbers of hops an ip packet takes the reach its destination, which is solely determined by the internet routing infrastructure

    Tcpsynflood攻擊發生時，在路由器會引起某些異常情況，如流量異常（可能會流量猛增） ，報文流一些特徵的統計分佈特性發生改變（如源ip地址的隨機分佈特性， ttl欄位的分佈特性）等。
  13. The preventing flood and draining waterlogging plan of china - singapore suzhou industrial park by taking the following factors into consideration, such as the cost, the characteristics, the management, the full utilization of the land, and the investor ' s psychological influence etc, this plan was elaborated by comparing the program of connecting protective embankments with the program of filling pits with earth. 2

    《中新蘇州工業園區防洪排澇規劃》通過對聯圩方案及填土方案，在工程投資、運行管理、土地利用、工程特色以及對投資商心理影響等方面的綜合比較，確定合理的工程方案。
  14. Based on the analysis of satellite images of various periods, landform data and river channel transverse section evolution in the lower yellow river, the characteristics of the river channel boundary condition changes at different location are clarified as middle flood channel flood transport width and area are evidently decreased especially for the main channel with comparison to 1950s, beach area that is unimpeded before become blocked because of road, irrigation channel constructed on it, and consequently intensify high edge of beach and lowering dyke and river

    在現場查勘的基礎上，通過對丹江口水庫和小浪底水庫攔沙初期下遊河道演變、排洪能力變化特點的對比，分析了黃河下游防洪面臨的新形勢:小浪底水庫攔沙初期，下遊河道發生沖刷，但艾山以下窄河段沖淤變化不大，近年來形成的淤積萎縮的狀況難以很快改觀，游蕩性河段調整劇烈，工程出險機遇增大，河道水位流量關系中水流量以下部分同流量水位明顯降低，中水流量以上部分水位降低幅度可能會明顯偏小，防洪形勢仍不容樂觀。
  15. It indicats that the fluvial sedimentary sequence of the flood plain of weihe river in this region is rather complete and continuous. the grain - size analysis carried out in laboratory has revealed the characteristics of the changes of weihe river during last 1300 years. based on multi - disciplinary analyses, including landform characteristics, grain - size and documents datum, the paper has attained the following important conclusions

    分析了渭河三個河流沉積物剖面的粒度組成特徵，剖面各層粒度分佈特徵，剖面粒度參數md 、 mz 、 、 sk 、 kg的變化，剖面粒度特徵值- 5 、 16 、 25 、 50 、 75 、 84 、 95的跳動，並將三個剖面的粒度特徵作了對比。
  16. Huanghua - hebei, beidagang - tinjin and wudi - shandong are close to bohai bay, classified in sea - coast locust area with the similar ecological characteristics. pingshan - hebei, on the other hand is at the verge of gangnan reservoir, classified in river - flood area

    河北黃驊、天津北大港和山東無棣三個蝗區生態特徵相似，均靠近渤海灣，屬于濱海蝗區，河北平山蝗區位於崗南水庫庫區，屬于河泛蝗區。
  17. Analysis of flood characteristics during the first experiment for water and sediment regulation in the lower yellow river

    黃河首次調水調沙期間下游洪水特性分析
  18. By analyzing interval flood and cascade operation characteristics of the upstream yellow river basin, the influence of longyangxia reservoir operation mode in different states on gongboxia power station construction during flood period is studied

    分析區間洪水特性和黃河上游梯級運行特點，針對龍羊峽水庫實際運行狀況，分析不同狀態下的龍庫運行方式對公伯峽水電站的施工渡汛影響。
  19. The main results of this paper are as follows : ( 1 ) the operation chart for individual and associated operation of new and old units, is plotted by using series of multiyears flows and the associated charts is advised to direct the reservoir operation. ( 2 ) on the basis of analysis on the characteristics of hydro - information observation system and flood forecasting system, some key problems in flood operation such as dispatching period of time, decision - making method and so on are studied. ( 3 ) the study and development of flood - dispatching simulation model

    論文取得的研究成果如下： （ 1 ）採用長系列徑流資料，繪制了新老機組單獨運行和聯合運行調度圖，通過對比分析，建議採用聯合運行調度圖來指導水庫運行； （ 2 ）在對石泉水庫水情測報系統和洪水預報系統的特點進行分析的基礎上，研究了洪水調度中的幾個關鍵問題，如調度時段、決策方法等； （ 3 ）洪水調度模擬模型研究與開發。
  20. This thesis concludes the flood control situation, engineering measures and the situation of optimal dispatch method. it studies flood control engineering system, which is composed of flood prevention reservoir, river course dyke and natural detention basin, and the relationship between various flood engineering measures according to the composition and characteristics of the flood control engineering of the middle - lower reaches of beijiang. it suggests the objective function based on the least flood loss and the optimal dispatch strategy structure of the middle - lower reaches of beijiang bound with the requirements of the flood gradual progress equation combined with hydrology and hydraulics

    本論文總結了我國防洪情勢、防洪工程措施及其優化調度方法研究的現狀；針對珠江流域北江中下游防洪體系的組成及其防洪工程的特性，研究由防洪水庫、河道堤防和天然滯洪區共同組成的防洪工程體系中各防洪工程措施之間的關系；提出了以洪災損失最小為目標函數、以水文學和水力學相結合的洪水演進方程等要求為約束條件的北江中下游防洪體系優化調度策略框架。
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