vertical momentum 中文意思是什麼
vertical momentum
解釋
垂直動量-
Numerical models are frequently used to simulate water flow in hydraulic engineering. shallow water equations are basic governing equations with assumption of the velocity distribution uniformly in vertical, so they have some limitations on the simulation of some plane flows, such as wind - induced flow, curve river flow and flow nearby the submerged dikes. for above - mentioned reasons, extended shallow water equations are developed by introduction of momentum coefficient, correction of convection and bed resistance in equations of motion
在水利工程中經常需要採用數學模型模擬水流的流態，淺水方程是進行平面流態模擬計算的基本控制方程，但因其忽略了流速垂線分佈的不均勻性，在模擬某些平面流態（如風生流動、河灣水流、潛壩等工程附近的流動）時存在一定的局限性。 -
The momentum flings the 18 - seater train into a 90 degree climb to a height of 139 meters, followed by a vertical plunge through a three - quarter spiral and a final jaunt over a 39 - meter high “ camel hump
這股動力將十八個座位的列車，以九十度爬升角，沖上一百三十九公尺，經過翻轉四分之三，再垂直陡降，最後慢速通過三十九公尺高的駝峰。 -
In other words, the vertical component of its linear momentum remains zero, since there is no resultant vertical force.
換句話說，因為沒有豎直方向的合力，所以線動量的豎直方向仍為零。 -
Productivity will continue to be an important focus and we will carry on the momentum of existing programmes such as installation of vertical postman preparation fittings to achieve further productivity gains
產值效益仍將是我們關注的重點之一。我們會繼續把郵差垂直揀信?引入其他派遞局，藉此提升產值表現。 -
The horizontal and vertical momentum loss caused by the shock of heavy rain in low - level wind shear of thunderstorms on the airframe and wing are analyzed, the water film thickness on the airframe and wings estimated, and the flight resistance resulted from raindrops - striking caused by the roughness of airplane when the heavy rain shocks the airplane is discussed
摘要分析了雷暴低空風切變中大雨滴沖擊飛機的機身和機翼而引起的水平和垂直動量損失，估算了大雨累計在機身和機翼上的水膜厚度，並討論了因遇到大雨雨滴沖撞而粗糙化的機體所產生的阻力。 -
At first an analysis of the basic principles of the vertical - axis variable - pitch turbine is given including two methods to calculate the induced velocity. one is the three different streamtube - methods which are single - disk single - streamtube ( sdst ), double - disk single - streamtube ( ddst ) and multi - streamtube ( mtt ) method based on the momentum theory, the other is the vortex method ( vtth ) based on the potential eddy theory
一是根據動量定理的流管模型得到的求解誘導速度的單盤面?單流管方法（ sdst ） 、雙盤面?單流管（ ddst ）方法、多流管（ mtt ）方法；二是根據勢渦理論得到的求解誘導速度的的渦方法（ vtth ） 。 -
With the wind, pressure and sea surface temperature ( sst ) data provided by ncep / ncar reanalysis project and excess length of day ( lod ) data provided by international earth rotation service ( iers ), atmospheric angular momentum ( aam ) and its horizontal and vertical transportation are computed and analyzed, which are in accordance with maintenance of the zonal circulation. and the anomalous aam is highly consistent with el nino events
應用ncep / ncar40年再分析計劃提供的風場、氣壓場、海溫等資料以及國際地球自轉服務局（ iers ）提供的日長變化資料，計算大氣角動量及其水平、垂直輸送，分析其氣候及異常特徵，發現角動量及其輸送與緯向環流的維持相一致，角動量異常與厄爾尼諾事件緊密相關。 -
2, application of the modified k - e model by munk - anderson equation to gravity flow in reservoir shows that the modified model overestimates the turbulent intensity in reservoir. it results enhance of momentum exchange in vertical direction and large error in velocity
採用munk - anderson修正的-模型模擬水庫重力下潛流，發現該修正模型過高地估計了水庫的紊動強度，使垂向動量傳遞加大，流速誤差明顯增加。 -
On the basis of research results of the existing experts and scholars especially the theory put forward by professor xu zhenliang ( my tutor ) that predicts the velocity profiles and friction loss of settling slurry when it flows in horizontal pipe and upward - inclined - pipe, relations among the velocity of water, that of solid particles and that of settling slurry have been established by the analysis of momentum transmission process between water and solid. then the calculation formulae for fricton loss of downward inclined and vertical pipe are deprived
本文在現有專家學者的研究成果特別是許振良教授（導師）提出的預測非均質流在水平管道及向上傾斜管道流動時的速度分佈及摩阻損失的理論的基礎上，從動量守恆的角度建立了清水速度、固體顆粒速度和漿體速度之間的關系，進而推導出了向下傾斜及垂直管道沉降性漿體輸送的摩阻損失的計算公式。 -
It provided not only continuously vapor but also the heat energy and momentum, and induced several meso - scale vertical circulations, in the meantime, it was helpful to maintains the strong upward motion in the rain area
通過診斷分析發現：低空急流提供了源源不斷的水汽，同時也向雨區提供了主要的熱量和動量，還激發出多個中尺度的垂直環流，使降水具有一定的中尺度特徵。 -
A two layer numerical model is given which includes vertical integration equation, momentum equation, temperature equation, and its adjoint equations to study the vertical diffusivity coefficient
本文給出了一個二層數值模式，包括全流方程、運動方程和溫度方程，建立了一個伴隨同化模式來研究垂直混合系數。
分享友人