water velocity 中文意思是什麼
water velocity
解釋
水流速度-
Considering the electrovalence, the curve of water consumption and the reliability of water supply, this paper respectively sets up the model based on the maximal flux and the model based on the expectation flux. it takes yearly expenditure converting value and yearly cistern converting value as target function and takes continuity equation, velocity of flow and compression resistance of cast iron pipeline as restrictions and sets up the pga model on optimal design of water supply networks
考慮到峰谷電價、用水量變化曲線及用水可靠性因素的影響，分別建立了以最高時流量設計管網的模型和以期望時流量設計管網的模型，以年費用折算值加上清水池年造價折算值為目標函數，以連續性方程、管中流速和鑄鐵管耐壓值等為約束條件，進行并行遺傳演算法對給水管網優化設計的實現。 -
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。 -
Changes of the longitudinal and transversal wave velocities in different directions and the rock velocity anisotropy as a function of confining pressure have been studied under laboratory ultrasonic frequency for shale and sandstone with marked foliation, which had been saturated by the fluids with different viscosity kerosene and vacuum pump oil and salinity distilled water, 50000
利用不同黏度煤油和真空泵油不同礦化度蒸餾水50mg l和150mg l的nacl溶液的流體對頁巖和具有明顯層理的砂巖進行飽和，在實驗室超聲頻率下研究樣品不同方向縱橫波速度以及各向異性參數 -
The influence of the cloud droplet spectrum character and the spectrum growth and change is considered, which does not use a cut - off value for conversion from cloud water into rain water process. in the continuous coalescence equation, the particles fall velocity difference is not moved out from the integral, but is integrated in the equation as the function of diameter d to avoid the error of using particles average fall velocity. in the new scheme, generation rate of graupel due to the collection of snow by graupel and the collection of cloud ice by graupel are included
雲中凝結核ccn的數濃度採用超幾何函數表示；雲水向雨水的自動轉換過程採用grabowski （ 1999 ）的公式，考慮了雲滴譜的特徵和發展變化對該過程的影響，而不是採用原方案給定閾值的方法描述該過程；對連續碰並方程不再將粒子落速差作為常量提出積分號外，而是直接作為粒子直徑函數在積分號內求解，這樣處理可以迴避使用粒子群的平均落速帶來的誤差；增加了霰和雪、霰和冰晶的碰並微物理過程。 -
In the first part, the steady nonlinear vortex lattice method is adopted to calculate the hydrodynamic characteristics of open water ichthyoid rudder, and the induced velocity of ichthyoid rudder is calculated using panel method
本文理論計算部分，採用定常非線性渦格法計算魚形舵的水動力性能，用面元方法計算舵流場的誘導速度。 -
4. the temperature of infall cooling water is less than 30, the velocity of cooling water flow should be over 4l min for capacitor below 1000kvar and it should be over 6l min for capacitor over 1000 kvar
4 .冷卻水的進水溫度不超過30 ，冷卻水的流速對1000kvar及以下的電容器不低於4l min ，對1000kvar以上的電容器不低於6l min 。 -
The physical phenomena of underwater explosion are analyzed, and the initial velocity equations and dynamics equations of water particles, which compose the water columns, are set up
從分析水中爆炸的物理現象入手，建立了構成水柱的各水粒子的初始速度計算模型，結合水粒子的受力情況，給出了水粒子的運動方程。 -
A discrete - velocity model for the shallow water long wave equation
用離散速度方法計算淺水長波方程 -
Dsc for the nanocomposites showed the glass transition temperature ( tg ) of the nanocomposites increases slightly as the mmt content increases. water absorption velocity and water retentivity under pressure tests showed the addition of montmorillonite ( mmt ) can improve the beginning absorption velocity and water retentivity for pure superabsorbent resin
吸水速率和加壓保水能力測試表明，一維納米級蒙脫土片層的引入能在一定程度上提高高吸水性樹脂的初期吸水速度和加壓下的保水能力。 -
The hydraulic gradients of settling slurry flow transported in three kinds of moving states, i. e. suspension, saltation, or partially suspension were investigated, based on analyzing the changes of solid particles and water in momentum, velocity and their mass related to momentum exchanging over the acceleration period of the solid particles
從固體顆粒加速期間清水與固體顆粒的速度變化、動量傳遞、相關質量等基本問題分析入手，研究了沉降性漿體在水平管道內流動時其固體顆粒在3種流動狀態下的水力坡度，提出了沉降性漿體在水平管道內流動的機理模型，進而用該模型對一些輸送條件下的沉降性漿體的水力坡度進行了計算。 -
The following results were found, i. e., the water ratio affects obviously the acoustic wave velocity of rock sample ; the wave velocity is higher in saturated rock samples than in unsaturated ones ; and it decreases gradually with the strain of samples during uniaxial compression ; and also with the lengthening holding time at 160 ; when heating the samples the acoustic wave velocity increases slightly in initial stage and comes to the peak value at 60, then decreases gradually with increasing temperature ; meantime, there is a certain temperature effect on rock samples size
實驗發現含水率對波速影響比較大，飽和巖樣的聲波傳播速度高於不飽和巖樣的聲波傳播速度；人工預制裂紋對聲波傳播速度影響不大；單軸壓縮條件下，聲波傳播速度隨應變增加逐漸降低；在同一溫度（ 160 ）下，波速隨保溫時間的增加而逐漸降低；在對巖樣逐漸加熱情況下，初始加熱階段波速略有升高，當溫度達到60時，巖樣波速達到峰值，之後隨著溫度繼續升高其波速逐漸下降；波速隨溫度變化具有一定的尺寸效應。 -
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。 -
Abstract : through study on energy dissipation of goupitang project on the wu - jiang river, the velocity field in the water cushion pool downstream ski - jump or drop was measured by hot - film anemometers on a fine model with scale 1 380
文摘:結合烏江構皮灘水利樞紐工程消能問題研究，用熱膜流速儀在比尺為1 380的精細模型上量測了拱壩挑跌流在水墊塘內的流速場，並由試驗成果分析了淹沒射流在水墊塘內的消能過程，計算了消能率。 -
Air is entrained as water jetting into water cushion pool, the gas - liquid two phase flows field are formed. the every phase velocity field are measured by using piv and ptv ( particle tracking velocimetry ) method in the course of jet angle 75and60 in gas - liquid flows of water cushion pool. image house of two phase flows are set up
西安理工大學碩士學位論文使用數字圖像處理技術中的piv和ptv測速技術就射流入水角75度和60度兩種情況分別測量了水墊塘模型水氣兩相流流場的各相速度場，建立了相應的兩相流流態圖像庫。 -
Through calculating the age of shallow and deep groundwater, the velocity of karst water cycle has been obtained
分別計算了淺層和深層地下水的年齡，確定了巖溶水的循環速率。 -
Auv ' s position control and velocity control are researched and s imulation experiment i s carried out at two situations : in blue and whisht water and in water with current and adding noise
本文設計了auv位置控制器和速度控制器。並對深海靜水和有海流噪聲兩種情況進行了模擬試驗。 -
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。 -
Red tide is a natural phenomenon with complicated causes. under a favourable combination of various environmental factors, such as light intensity, temperature and nutrients in the seawater, and water velocity, microscopic phytoplanktons will bloom and create a red tide
（三）紅潮的出現為自然現象，成因很復雜。在不同的自然環境因素如光線強度、海水溫度、水中營養物的水平、水流速度等的配合下，海水裡的微型單細胞浮遊藻類便會大量繁殖而形成紅潮。 -
Dilution and dispersion in constant horizontal flow and bottom multi - port discharging was studied in accordance with the hydraulic model test. the influence of diffusion parameters ( jet angle, jet velocity, number of nozzle, riser space ) and environmental parameters ( water depth, water velocity ) on dilution were analyzed. the experimental results show that environmental parameters have prominent effects on wastewater dilution and dispersion, in addition to that, diffuser design parameters have significant influence on wastewater dilution and dispersion. for bailonggang outfall zone, jet angel is 10 or so, nozzle number is 16 or so
藉助於人工模型試驗，分析了恆定橫流底部多孔排放時擴散器設計參數（射流角度、射流速度、噴口個數） 、上升管間距）及環境參數（環境水深、環境流速）對污水近區稀釋擴散效果的影響，實驗結果表明，除了環境條件對污水稀釋擴散效果影響明顯之外，擴散器設計參數對污水的近區稀釋擴散也有顯著的影響，針對白龍港排放口水域，噴口射流角度宜控制在10左右，噴口個數取16個 -
The effect of hydrodynamics on the algal growth rate is mainly studied herein based on the analysis of the algal growth mechanism and the measurement data of the daninghe river which is a branch of three - gorges reservoir, and then an empirical formula of the algal growth rate related with water velocity is proposed for the daninghe river ; which can be used to predict the change status of the eutrophication of the branch when the water velocity is decreased with the increase of water level of the three gorges reservoir
基於國內外對氣候條件和營養鹽條件對藻類生長速率影響研究成果基礎上，採用機理分析和實際案例分析相結合的方法，重點探討了以流速為表徵要素的水動力條件對藻類生長速率的影響特點，並且以三峽庫區支流大寧河為例，初步建立了流速對藻類生長速率影響規律的經驗關系式，為預測三峽庫區富營養化演變態勢提供基礎，進而為有效防治富營養化提供技術支撐。
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