河道中游 的英文怎麼說

中文拼音 [hédàozhōngyóu]
河道中游 英文
middle reaches
  • 河 : 1 （天然的和人工的大水道） river 2 （指銀河系） the milky way system; the galaxy 3 （特指黃河） t...
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  • 游 : Ⅰ動詞1 （人或動物在水裡行動） swim 2 （各處從容地行走; 閑逛） rove around; wander; travel; tour 3...
  • 河道 : river course; streamway; covalency; runway; cut; river channel河道變遷 channel change; migration ...
  1. By using the yearly data of water - sand that is gotten by a couple of adjacent hydrologic station in yellow river lower reaches, this paper makes use of kinds of math methods looking for the nonlinear disturbance among all of the factors, and introduces the thinking of analysis, logic, conclusion, inference, and random to nonlinear hydrologic forecasting. it realizes the valid approximation of the water level process in erodible - bed channel

    本文選擇黃河下游兩對相鄰水文站多年水沙資料，藉助多種數學方法尋找其中的非線性擾動項，將隨機數學中分析、邏輯、歸納、演繹、隨機的思考問題方式引入到非線性水文預報中，實現沖淤河道相應水位過程的有效擬合。
  2. The flood damage exposes the contradiction between people and flood, population explosion results in that people need more and more land for farming, a lot of flood - plain, flood - plain protection, retarding basin, and ever floodway are occupied by farmers for agricultural purpose. so that major or even middle and small flood can not be smoothly discharged in the river

    這場洪災暴露了建國以來治淮工作中久而未決的一個問題，即局部地區為了解決人多地少的問題，大量侵佔河道行洪灘地，與洪水爭地，不給洪水出路，使得本已不堪重負的河道，即使是中、小洪水來臨，也處在高水位狀況下運行，加劇了中、下游地區的防洪風險。
  3. As a result, vulnerable ecological environment is showed with the ecological bearing capacity in middle reaches of hetian river. in the view of the features of landscape pattern in the middle reaches of hetian river, the landscape protection principles of development, harmonization and reality and ecological landscape construction principle including adapting nature, mutualism, adjusting ecosystem and meliorating function, local regulation and whole " harmonization are put forward

    A ，指出區域內生態環境質量在提高，但依舊無法脫離荒漠生態體系，是一種極其脆弱的生態環境。針對和田河中游地區景觀生態的具體特點，提出了發展、協調、現實的景觀保護原則以及適應自然、共生互利、調整結構，改善功能、局部控制與整體協調的景觀生態建設原則，相應地制定出河流廊道建設、綠色植被建設以及綠洲建設的景觀生態建設途徑
  4. It decides the protective objectives for different ecological reserve area based on the study of channel wetlands and survey and analysis of top - grade species ( fishes ) of the yellow river : from the point of the basin, the main ecological protective objectives of the tipper stream are vegetation and forest for conservation of water supply ; soil and water conservation is the main in the middle reaches for vegetation protection and rehabilitation and ; the lower reaches takes types of wetlands protection and wetlands area maintenance as the main, protecting biodiversity and important birds resources

    在黃河河道濕地研究和黃河水體內頂級物種（魚類）的調查分析基礎上，確定了黃河不同類型生態保護區的生態保護目標：從流域角度而言，黃河上游的主要生態保護目標是植被和水源涵養林；中游應以水土保持為主，主要是恢復和保護植被；下游以保護濕地類型和維持濕地面積為重點，保護生物多樣性和重要鳥類資源。
  5. The upstream monitoring station, located near the village of tseng lan shue, was graded fair in 2005. interestingly, this stream gets better as it goes down. the watercourse falls steeply in mid - stream, creating strong aeration which aids the rivers self - cleansing abilities

    位於井欄樹村附近的上游監測站jr3於2005年錄得普通水質，但河道中下游水質則較佳，原因是井欄樹溪中游地勢高，水瀉急，水中的含氧量增加，而河道凈化能力亦相應提高。
  6. A new method is presented. the travel time, including the time delays associated with overland folw pathways, is obtained. it is expected that the hillslope velocity and the stream velocity are different, and different equation is used. in the method, the fact that velocity increases going downstream in river systems is taken into account. after the travel time of each cell being calculated, the frequency distribution of the times of arrival of individual water droplets at the catchment outlet - giuh, is obtained

    提出了一種匯流時間計算方法，匯流時間中包括坡地漫流時間和河道匯流時間。方法中坡地單元的匯流速度與河道單元的匯流速度採用不同的計算公式，同時考慮流速沿河道向下游的變化。流域中每一個網格單元的匯流時間得到后，將其看作隨機變量，進行統計分析后，得到匯流時間的頻率分佈? giuh 。
  7. Daoguanhe rerservoir is a typical hill type reservoir in wuhan, china. its area for fish culture is commonly 467ha. periphytic algae and periphytic protozoan including species, the content of chl. a and primary productivity et al, were studied from april 2000 to january 2001

    本文從2000年4月至2001年元月按每季度采樣一次，對道觀河水庫按上游、中游、下游設置的三個采樣站作了周叢藻類、周叢原生動物的群落結構和漁產潛力的研究，結果表明： 1
  8. Study on main fork changing place characteristics of branching river course in, idle and lower course of changjign river

    長江中下游分汊河道主支汊易位特性研究
  9. 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。
  10. Based on the optimal operation problem of flood control for multi - reservoir such as jiangya, zaoshi and yichongqiao reservoirs on the lishui river, a hierarchical model for optimal flood dispatching of multi - reservoir system, which includes a flood routing model and a discrete differential dynamic program model for the optimal flood dispatching of reservoir sub - system, is established : then a new decomposition - coordination algorithm is put forward

    摘要以澧水流域中上游的江埡、皂市及宜沖橋三庫聯合防洪優化調度問題為背景，建立了河道洪水演進方程與離散微分動態規劃相結合的水庫群防洪優化調度模型，提出了一種離散微分動態規劃與馬氏京根洪水演進相結合的大系統分解協調演算法。
  11. 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。
  12. The sand and gravel in the yangtze river is good building and filling materials

    摘要長江中下游幹流河道內的砂石是較好的建築和填築材料。
  13. The arch dams locate at such areas which have high mounain, deep valley, steep slope, narrow riverway and high seismic intensity. the aseismic capabilities of high arch dams have relationship with lives and properties of people and productions of industry and agriculture, so the eanhquake becomes the main factor of arch darns design

    這些大壩所在地區山高谷深，岸坡陡峻，河道狹窄，地處高地震烈度區，高壩的抗震性能關繫到下游廣大地區工農業生產和人民生命財產的安全，考慮地震因素成為大壩設計中的控制工況。
  14. In the north - western new territories, improvement works to about 12 kilometres of the lower and middle reaches of the kam tin river and the shan pui river in yuen long have been completed

    在新界西北部，元朗錦田河及山背河中下游約12公里長的河道改善工程已經完成。
  15. China marine oil spill contingency plan is now in the process of improvement. the inland waterway oil spill is another important area remain to be explored in term of increasing accident rate and booming shipping amount in yang tzi river. the need for inland waterway oil spill contingency plan is imperative. at strategic level, this paper compares several existing oil spill risk analysis methods including " historical date analysis " and " comparative risk indexes ", pointing out limitation of them, and then apply the " comparative risk indexes " approach to " river segment " spill risk analysis, developing " river segment oil spill comparative risk assessment framework " this paper also take new approach to collision and grounding in river by stochastic modeling tanker traffic in narrow waterway

    本文在內河溢油反應戰略規劃層次上，分析現有的溢油風險評估方法，包括歷史數據統計法和比較風險評估法，指出相關方法的適用性和局限性；基於長江下游水道採用「區段」和「河段」雙層評估的思路，提出「長江下遊河段比較溢油風險評估模式」 ；將馬爾科夫狀態轉移的思想應用到船舶運動描述中，從隨機過程角度分析船舶在水道中的運行和事故發生，得出船舶事故概率計算模型。
  16. In the paper, the flexural river distribution, flexural radius, central angle and flexural coefficient at middle reaches of huaihe river are analysed statistically, and the cross - section of river is prelimary analysed

    摘要文章著重對淮河中游的彎道分佈及彎曲半徑、中心角、曲折系數進行了統計分析，並對彎道的斷面形態進行了初步探討。
  17. ( 2 ) validate whether the crest elevation can meet the require of energy dissipation and erosion prevention during the beginning period of flood discharge. ( 3 ) calculate the altitude of downriver cofferdam, and make it meet the require of energy dissipation and erosion prevention. ( 4 ) calculate some average velocity of flow through some sections, including contracted section in stilling basins behind upriver cofferdam, if the hydraulic jump happen in lower reaches of the river. the program will calculate the average velocity of flow of contracted section and the length of the apron

    主要設計內容包括：計算上游圍堰后消力池的尺寸；驗證泄洪初期壩面高程是否能夠滿足消能防沖需要；計算下游圍堰堰頂高程，使其滿足泄洪期圍堰和壩體過流的消能防沖和工程進度的需要；計算部分斷面平均流速，包括：上游圍堰后消力池中收縮斷面的斷面平均流速；壩首和壩末的斷面平均流速；當下遊河道發生水躍時，計算下遊河道的收縮斷面平均流速及需要鋪設護坦的長度。
  18. Meanwhile the ecological problems caused by lack of water are becoming very serious, such as the intermittent of river, the descent of underground water, the degeneration of vegetation, the expansion of desert, the oasis around downstream of black river and stone sleep river which have been the main seminary of dust storm in north china

    水資源短缺將嚴重影響到區內經濟發展和人民生活水平的提高，同時因缺水導致的河道斷流、地下水位下降、植被退化、沙丘活化、荒漠化等生態環境問題不斷加劇，特別是黑河、石羊河流域下游綠洲退化嚴重，已成為中國北方沙塵暴的主要發源地。
  19. The keys to sand mining management in the trunk channel of the middle and lower yangtze river are whether or not the related decision of the country is scientific and reasonable, whether or not the policies of all level governments are correct

    長江中下游幹流河道采砂管理的好壞，關鍵就在於國家的有關決策是否科學、合理，各級人民政府的政策擇取是否正確。
  20. The development course of sand mining management in the trunk channel of the middle and lower yangtze river is also the course of continual renewal and readjustment of national and all level government ' s policy decision on sand mining in river channel

    長江中下游幹流河道采砂管理的發展歷程，也就是國家及各級政府有關河道采砂問題決策不斷更新、調整的一個過程。
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