lower reaches 中文意思是什麼

lower reaches 解釋
下遊河段
  • lower : adj 〈low 的比較級〉1 較低的。2 下級的，低級的。 lower animals 下等動物。3 南部的。 in lower Manh...
  1. ( 4 ) enhancing the downriver cofferdam will make the lower reaches of a river dissipate more energy. however, it will increase erosion and the protection will be more difficult

    抬高下游圍堰可以使下游分擔更多的消能任務，減輕壩區的沖刷和消力池的消能負擔。
  2. The city is situated along the lower reaches of the elbe, approximately 100 kilometres inland from the north sea

    漢堡處于易北河下游，離北海約100公里。
  3. 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。
  4. At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel

    首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。
  5. 1 ) the analyse of mei - yu front structure there is stable mei - yu front along the middle and lower reaches of yangtze river during the mei - yu period in 1999. the temperature contrast in the low level of mei - yu front almost disappeared, which existed only in the upper level. so the mei - yu front is " footless " from the temperature field

    得到的基本結果如下： 1 ）梅雨鋒結構的分析1999年梅雨期間，在長江中下游維持著穩定的梅雨鋒，梅雨鋒在低層的溫度對比幾乎消失，只存在於對流層中上層，因此從溫度常看梅雨鋒是一種「無腳鋒」 ，在對流層中上層具有上寬下窄的梅雨鋒機構。
  6. 3 ) the initial and final date of the rainband in middle and lower reaches of yangtze river have the obvious characteristic in interannual change in summer

    3 ）初夏長江中下游雨帶的開始日、結束日都有明顯的年代際變化特徵。
  7. Some particular measures to be taken are as the followings : ( 1 ) to establish a uniform harmony mechanism in the river basin in order to have a general plan for wetland protection and utilization ; ( 2 ) to combine the existing protection districts according to lake drainage area and species distribution, and to construct new wetland protection region in order to solve problems in management districts ; ( 3 ) to develop wetland restoration and reconstruction ; ( 4 ) to carry out reforesting in formerly cultivated land and to construct shelter forest of the yangtze river in order to control soil erosion and to preserve the water resource ; ( 5 ) to protect and utilize reasonably the wetland resources in the middle and lower reaches of the yangtze river ; ( 6 ) to strengthen the research of wetland science

    具體可採取以下措施：在流域內建立統一協調機制，對流域濕地進行保護與合理利用，合理布局，統一規劃；按湖泊流域和物種分佈整合現有保護區，建立新的濕地保護區，解決目前管理上的制約問題；大力開展濕地修復重建；推進退耕還林、長江防護林等工程建設，發揮森林治理水土流失、涵養水源的作用；在保護的前提下科學合理地利用長江中下游濕地資源，開拓新的生產力；同時加強濕地科學研究。
  8. The ncep / ncar global reanalysis data about 55 yean ; ( 1948 - 2002 ), the observed data about 2 years ( 1999 - 2000 ), the meiyu data in the mid - lower reaches of the yangtze river and the precipitation data at 160 stations in china duing 1951 to 2000 are used in the paper. we present a preliminary study on the relationship between the precipitation total for meiyu and the summerly precipitation in the eastern side of the northwest china. then using nonhydrostatic version mm5 with one nested grid, the effect of the circulation patterns for meiyu on the summerly precipitation in the eastern side of the northwest china was simulated by numerical simulation of full physics

    本文採用1948 2002年ncep再分析資料、 1999 2000年的全球地面、高空觀測資料、 1951 2000年梅雨以及全國降水量資料，初步研究了長江中、下游地區梅雨事件與西北地區東部夏季降水的聯系，並用mm5中尺度非靜力模式模擬了多（少）梅雨環流型對西北東部夏季降水的影響；另外，還分析了梅雨與四川盆地、東南沿海地區夏季降水的聯系。
  9. Based on field data and former researches, influence of inflow of anabranches on middle and lower reaches of the hanjiang river was analyzed

    摘要在實測資料和前人研究的基礎上研究了支流入匯對漢江中下游水沙條件、河床演變以及河流功能維持的影響。
  10. Inflow of anabranches together with the erosion of riverbank and riverbed is important to the evolution and the sustainable function in middle - lower reaches of the hanjiang river

    支流入匯和河岸、河底侵蝕一起，是影響下遊河床演變、維持河道功能的重要因素。
  11. The species, heights, diameter breast heights, canopy widths and plant numbers in 38 quadrats of 6 belt transects, which were located in yingsu cross - section and kaerdayi cross - section lying in the lower reaches of tarim river where populus euphratica concentrated, were investigated to study the distribution patterns, aggregation intensities and distribution pattern scales of p. euphratica populations at different distances away from the river

    摘要在塔里木河下游胡楊分佈集中的英蘇、喀爾達依斷面，設置了6條樣帶38塊樣地進行植被種類、高度、胸徑、冠幅、株數等因子調查，研究了不同離河距離胡楊格局分佈類型、聚集強度及其格局規模。
  12. Separately speeking, for outward rivers in cansu ( either to the yellow river or to the yangtze river ), the allocable water resources are mainly the river runoff and groundwater, the priority sequence of water resources allocation would be : the water use for maintenance of local plantation including the environment - oriented and irrigated ones, water use for social and economic activities, and the runoff to lower reaches

    外流河流域的降水首先為當地的植被耗用，剩餘的才形成可供開發的地表徑流和地下水；水資源配置的順序是：當地植被耗水，當地社會經濟用水，最後形成干支流出境的徑流供中下游地區使用。
  13. Risk analysis of dike breach in lower reaches of yellow river

    黃河下游懸河決口災害的風險分析與評價
  14. The ditches are the first pool of diffuse nutrients from rain runoff and field drainage, and are shaped to a net work in the area of the lower reaches of the changjiang river where the cultivation manner of fields are rotation of rice and wheat. now we have learnt little about the mechanisms of pollutants trasport and transformation in ditch wetlands

    長江下游水稻-小麥輪種區溝渠濕地呈網路狀密集分佈，是降雨徑流和農田排水的首要匯聚地，我們對污染物在溝渠濕地中遷移轉化的機理還知之甚少，本文分析了： 1
  15. According to the analysis of the beach distribution, landforms and structure of flood land, hydrologic geology and bad geological phenomena in the middle - lower reaches of yangtze river, this paper comprehensively studies the environmental geological conditions for harbour construction in the banks of yangtze river. discussed are the relation between inner material component and rock system beheath in the beach. presented are beachs structure and the category and the behaviour of groundwater, and offers a scientifis basis for harbor construction

    論述了長江中下游漫灘分佈特徵及其成因，分析了漫灘微地貌及其相關沉積物的地質特徵，從漫灘內部物質組成及其下覆巖系關系，全面地論述了漫灘的結構特徵，闡述了地下水的類型及動態，以及由此引起的不良地質現象，為長江中下游港口工程建設提供了地質依據
  16. 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。
  17. In ancient times, it is vital to think highly of the irrigative construction and renovation that plays an important part in agricultural economy development, especially for the lower reaches of the yangtze characteristic of rice - growing

    摘要對農田水利的重視和興修，是我國古代農業經濟發展最為重要的條件之一，對于以植稻為主的長江下游地區來說，農田水利的興修尤為重要。
  18. The typical sightseeing of south of the lower reaches of the yangze river, “ visiting west lake with the boat floating on river and a boatwoman as companion ”, once was the spirit of west lake landscape culture

    「一葉扁舟浮行水面，一位船娘相伴遊湖」 ，這般獨具江南靈氣的風景曾是西湖山水文化的點睛之筆。
  19. The channel change of lower reaches of yellow river

    黃河下遊河道改道問題探討
  20. The widely spreaded manchu mythology of the " three fairies " not only maintained parts of the proto - ecological materials of matriarchal society but also explained that the concrete location of the " three fairies " is the bolang lake in the lower reaches of heilongjiang, which provided important evidence for us to understand the formation of the manchu nationality and the address of manchu precisely

    摘要廣泛流傳于滿族中的「三仙女」神話故事，不僅保留了當時母系氏族社會的部分原生態素材，更重要的是說明了「三仙女」沐浴湖泊的具體方位在黑龍江下游的博朗湖，它為我們今天準確地認識滿族的形成和族稱的來源，提供了重要依據。
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