水面流速 的英文怎麼說

中文拼音 [shuǐmiànliúsù]
水面流速 英文
velocity at a point
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 水面 : the surface of the water; table水面操縱 surface manoeuvering; 水面導航 surface navigation; 水面發...
  • 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
  1. The article is based on nation nature science foundation of china, " biogeochemical cycling of pollutants in complex environments of tidal flats in the yangtze estuary " ( no. 40131020 ). the author chose open tidal flat of dong tang chongming yangtze estuary as research object and set up typical section plane so that under the good condition, the author measured hydrology element, total nitrogen and total phosphor index

    本文依託國家自然科學基金重點項目「長江口濱岸潮灘復雜環境條件下物質循環研究」 （批準號： 40131020 ） ，選擇了長江口崇明東灘敞開型潮灘為研究對象，設置典型斷面，在平靜天氣條件下，實測了水文、地球化學要素，獲得了水位、流向、流速、 tn及tp等指標6000多個實測數據，著重對長江口潮灘水動力過程、 tn和tp的動力輸移過程進行研究。
  2. Sand has accumulated in a deltaic pattern on both the marine and lagoon sides of the inlets in conjunction with this diminishing current flow.

    隨著水流速度的減慢，砂質物遂以三角洲的形式堆積在進水道面向海洋和瀉湖的兩頭。
  3. In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

    本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。
  4. Through the special studies on impacts to atomizing and humidifying effect from such factors as the firing pin type, centrifugal structure, higher spraying pressure, less aperture, initial water temperature and original state of the air, some conclusions are obtained, such as : the centrifugal nozzle with firing pin type, high pressure and little aperture has bigger air eddy and atomizing angle. the spaying liquid has high velocity. the droplet is small, and the heat and mass transfer velocity is high

    通過對撞針型結構、離心式結構、較高的噴水壓力、較小的噴嘴孔徑、噴水初溫及待加濕空氣初狀態對霧化加濕效果的作用原理的重點分析，得到：撞針型高壓小孔徑離心式噴嘴具有較大的空氣渦與霧化角，噴出的液體流速高、液滴小、水與空氣傳熱傳質速率高，撞針型結構提高了霧化加濕效率，高壓小孔徑的特點為霧化加濕提供了較大的能量，而噴水初溫的升高會減小水的粘性力和表面張力，從而優化加濕效果。
  5. The results of soil trough experiment indicated that, the flow velocity and froude number would add when the rainfall splash intensity rose ; the flow depth and resistance coefficient would decrease when the rainfall splash intensity increased

    土槽試驗結果表明：土壤坡面薄層水流流速和弗汝德數隨雨滴打擊強度的增加而增加，水深、阻力系數隨雨滴打擊強度的增加而降低。
  6. Therefore, it is the urgent need of land exploiture and environment repair that how to investigate the current situation of soil losses accurately, quickly and dynamically, how to predict & inspect soil losses, and provide scientific base for the repair of soil erosion and implement of soil and water conservation planning. otherwise, the survey method of soil losses is lagger in yunnan

    如何準確、快速、動態地查清水土流失現狀，進行水土流失預報和動態監測，為水土流失治理和水保規劃實施提供科學依據，是土地開發與環境整治的迫切需要，而雲南省在水土流失調查方法方面恰恰處于相對落後狀態。
  7. By modeling of " y " - shaped junction of the compound river channel with an intersection angle 90, the flow velocity and water level at the junction were obtained by use of the acoustic doppler velocimeter ( adv ) and point gauges

    摘要通過製作交匯角為90的復式斷面河道" y "型交匯河口模型，利用三維聲學多普勒流速儀（ adv ）和測針獲取流速及水位數據，對支流河口處的水流流態包括水面形態、水流流速和水流分區進行分析。
  8. What ' s more, we put forward some experienced formulas on the basis of the cortical analysis. the result of the research show that by installing diffluent piers with low ridge, we can eliminate the root of oscillatiny water jump, perfect the energy dissipation effect of water jump, also, we can improve the flow condition of down - stream. the fact that the main flow of down - stream is in the middle, not only effectively lower the speed of the bottom flow in the ridge rear, alleviate the erosion to the river bed, but also avoid the heavy wave resulted from the main flow in the surface, thus improve the surface wave of down - stream obviously. we can work out the body style parameters of diffluent piers with low ridge according to the project flow condition and experience formulas, and then reckon the down - stream surface wave condition for the protected building of the down - stream bank

    研究結果表明：設置低坎分流墩后，消除了擺動水躍水舌擺動的根源，提高了水躍的消能效果，改善了下游水流流態。下游水體的主流在中部，既有效的降低了坎后水流底流速，減輕水流對河床的沖刷，又避免了主流位於表面導致波浪過大的結果，下游的水面波浪明顯得到削減。依據經驗公式，可根據工程水流條件設計出低坎分流墩的體型參數，進而估算出下游沿程的水面波浪，為下游岸邊的砌護提供依據。
  9. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  10. Another based mathematics model about the anchor cable is used for ship - anchor system. the numerical calculation have been worked by programmed in the matlab language. at the same time the influence that the dragging speed of antisubmarine helicopter and the height over the surface of ocean acts on the shape and the tension of underwater cable, and that the current velocity and the diameter of anchor cable acts on the shape and the tension of anchor cable, has been calculated

    把建立的水下拖索數學模型和錨索數學模型分別應用於航空吊放聲納探頭?纜繩動力學系統和船?錨系統，採用matlab語言編程進行了數值計算，同時分別計算和分析了反潛直升機拖速、距海面高度對拖索形狀和張力的影響以及海流速度、錨索直徑對錨索形狀和張力的影響。
  11. In combination with the rapid development of highway construction and the present severe situation of tilled land and land resource, effects on economy, society and resource produced by highway construction are approached from three different angels : the improvement to the economy and society development, the peculiarities and the severity of occupation of land resource and the bad effects on land use caused by soil and water loss, thus arousing the people to pay high attention to the occupation of land resource in highway construction. a method of cost - benefit analysis is approached to evaluate the economic rationality of occupation of land in highway construction and the social benefits produced by highway construction are analyzed qualitatively ; at last, these methods are tested and verified through a concrete engineering in yangling agricultural hi - tech demonstrational zone and effective technological and systematic measures are put forward in order to settle the problem onto a compatibly developmental path

    本研究從公路建設迅速發展的實際和土地、耕地資源面臨的嚴峻形勢著手，在實地調研的基礎上，結合相關的文獻和資料，從公路建設對經濟、社會發展的促進作用，公路建設佔用土地資源的特點，公路建設造成的水土流失對土地資源利用的危害等三個方面系統地分析總結了公路建設活動對經濟、社會與資源的影響，以引起社會各界對公路建設與土地資源佔用問題的重視；用成本-效益分析法對公路建設佔用土地資源的經濟合理性進行評價，並對公路建設佔地的社會效益進行分析，通過楊凌農業高新技術產業示範區三路一橋工程驗證它們的實用性。
  12. When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge

    以75000km ~ 2的川中丘陵地區為試點研究區，繪制了該地區新模型的參數等值線圖，率定了不同設計頻率的改正系數，使設計者只需在地形圖上獲取集水面積，河道平均坡降和流域形狀系數，在參數等值線圖上查得橋涵所在地的相應參數，使用計算器即可迅速計算出設計流量，大大縮短了設計周期，且精度較高，設計的洪水流量一般低於傳統方法，從而可減小橋涵跨徑，節省投資。
  13. The results of flume experiment indicated that, the flow velocity and froude number of the overland flow would fall with the rainfall splash intensity rose ; the flow depth and resistance coefficient would enhance with the rainfall splash intensity increased

    水槽試驗結果表明：水槽槽面薄層水流流速及弗汝德數隨雨滴打擊強度的增加而降低，水深、阻力系數隨雨滴打擊強度的增加而增加。
  14. By means of the study the main results are listed as follows : ( 1 ) the results of flume experiment and simulated rainfall experiment with a fixed intensity indicated that, the influencing degree of rainfall on overland flow velocity had something to do with the runoff discharge above and rainfall intensity

    通過研究取得了如下結論： （ 1 ）水槽放水試驗和定雨強模擬降雨試驗結果表明，降雨對坡面薄層水流流速的作用與放水流量和雨強大小有關。
  15. 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
  16. In this research, the high - fluidity and super high - early strength repairing concrete is prepared though experimental research on quick - repairing materials to cement concrete pavement. this concrete is provided with many properties such as satisfying early traffic opening, benefiting operation, cutting down labor consumption and securing interfacial bond strength

    本課題通過對水泥混凝土路面快速修補材料的實驗室研究，旨在研製高流動性超早強修補混凝土，以滿足及早開放交通、利於施工操作並降低勞動損耗、保證新老混凝土的粘結性。
  17. A 2 - d hydrodynamic - numerical model was applied to typical rocky rapids called jiyutan by comparing different computational models. based on the comparison of different schemes, the change of the discharge and the flow current in a branch were analyzed, and the relationship between the flow condition and excavation area, scope as well as mode was discussed, the conclusions show : ( 1 ) in a branching rocky rapids, the velocity may be reduced and flow condition can be improved by excavating one channel partly

    本文在對各種數學模型比較的基礎上，應用二維水動力數學模型研究典型石質汊流灘? ?廣西潯江鯽魚灘航道整治工程方案，通過各方案計算結果比較，分析了不同汊道的開挖及汊道內不同開挖面積、開挖范圍以及開挖方式所引起的分流比及工程區域航道水力條件的變化規律，研究結果表明： （ 1 ）對于石質汊流灘來說，在某一汊道通過局部開挖河槽，擴大過水斷面面積，可以達到降低工程段流速、改善局部水流條件的目的。
  18. It will change the hydraulic conditions of the river, such as widening the water surface, decreasing water - flow velocity and purification capacity of water body in reservoir area meanwhile, many problem will be encountered, such as a large quantities of pollution in cities and towns, harmful matters in pesticide and fertilizer in reservoir area, poisonous pollutants in rainfall, accidental discharge of municipal wastewater or industrial sewage, limits of low economic level and urbanization etc.

    該水域的水力學條件發生變化，水流速度減緩，岸邊污染帶加寬，水體的環境容量降低；三峽庫區城鎮污水處理廠和廠礦的有害廢水處理設施不可避免地會發生事故排放；成庫期內庫區城鎮污水的治理很難達到水質要求，以及三峽庫區目前較低的經濟和城鎮化水平制約，庫區城鎮供水面臨的水環境問題日漸突出。
  19. Actually correction coefficient of kinetic energy reflects the non - uniform characteristics of cross - sectional velocity in natural rivers. it is related with hydraulic parameters and can be expressed by chezy ' s coefficient. the larger the resistance of boundary, the more non - uniform the distribution of cross - sectional velocity

    動能修正系數實際上反映了河道橫斷面流速分佈的不均勻性，與斷面的水力要素有關，可用謝才系數c來表示，水流所受的阻力越大，邊界對其影響也就越大，流速分佈愈不均勻，導致動能修正系數增大。
  20. By means of wide investigation, instruments development, a series of model experiments and relative theory analysis, following results are obtained in river model time scale distortion ratio, model roughening, inflow and outflow controlling methods and equipment, new water level and velocity measuring technique, model automatic measuring and controlling system : ( 1 ) with the aid of configuration software, a large scale river model automatic measuring and controlling system is developed, realizing river model automatically controlling and basic hydraulic parameters automatically measuring

    本文通過廣泛調研、儀器研製、系列模型試驗和相關的理論分析，在河工模型時間變態率控制、模型加糙、出入流檢測方法和設備、水位流速測量新技術、模型自動測控系統等方面取得了下列成果： （ 1 ）應用工控組態軟體技術，開發了一套大型河工模型自動測控系統，實現了模型內外邊界的自動控制和基本水力參數的自動量測。
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