momentum distribution 中文意思是什麼

momentum distribution 解釋
動量分佈
  • momentum : n. （pl. momentums, -ta ） 【物理學】動量；【火箭】總沖量；〈口語〉惰性；勢頭；要素，契機。 the momentum of attack 進攻的銳氣[頸頭]。
  • distribution : n 1 分配，分發，配給；分配裝置[系統]；配給品；配給量；【經濟學】配給方法，配給過程；分紅；【法律...
  1. The impacts of both the velocity head and momentum distribution in the t - junction of a tailrace surge tank on the critical stable sectional area of the tank were analyzed by using gardel ' s empirical equations for t - junction flow. based on thoma ' s theory, a formula of the critical stable sectional area is derived. 5

    基於gardel關於三通管水頭損失的經驗公式，研究分析了連接管處的速度水頭以及進出調壓室水體與尾水隧洞水體之間的動量交換，對有連接管的尾水調壓室穩定斷面積的影響，並在托馬（ thoma ）假定基礎上，推導出相應的調壓室穩定斷面的計算公式； 5
  2. 3. a three - dimensional - acoustic doppler velocimeter has been used to measure the velocity and turbulence in a compound channel with vegetated and unvegetated flood - plains. particulary in the interface region between main channel and floodplain. the distribution in three coordinate directions of velocity and turbulence intensities and the renolds stresses are presented. the momentum transfer at the main channel flood - plain interface can be described as an apparent shear stress which can be quantified as a function of the local turbulence at the interface

    採用adv對灘地種樹前後灘槽交界區域的流速場進行了量測。分析了灘槽交界區域的垂線流速、紊動強度和雷諾應力的變化。將灘槽交界的動量傳遞描述為一表觀應力，這個表觀應力可以看作是交界面處的脈動函數並將其定量化。
  3. Since in the few - body glauber theory the core and valence nucleons of a halo nucleus are treated separately, the obtained expressions of the reaction cross section, the nucleon removal cross section and the momentum distribution are all involved in multidimensional integrations

    由於在少體近似glauber模型中暈核被分成核芯和暈核子來處理，所以得到的暈中國原子能科學研究院博士學位論文核散射反應截面、核子逃逸截面以及動量分佈的計算公式均包含高重積分。
  4. Therefore we could carry out numerical calculations and obtain the reaction cross section, the nucleon removal cross section and the momentum distribution in the scattering of a halo nucleus with any types of density distributions. we compare the reaction cross sections calculated in the few - body glauber theory and the optical - limit glauber theory

    進一步對27p 、 28p反應截面的研究分析表明，考慮核芯2751的增大可以很好解釋實驗測量得到28p反應截面的增大，而要解釋27p反應截面的異常增大，需要同時考慮核芯2 「 si增大和具有非常彌散空間分佈的2s ， ， :態暈核子。
  5. We have collected a mass of stellar activity and rotation data of late - type stars. combining with the results of hipparcos satellite, we reserch the relation between stellar activity and rotation ( include rotation period and rossby number ), and discuss the distribution of stellar rotation period and the evolution of angle momentum of late - type stars

    因此，我們收集了晚型恆星的色球和冕球活動的指數以及恆星自轉方面研究發表的大量的觀測資料並結合hipparcos衛星的觀測結果，對晚型恆星的磁活動與恆星自轉間的相關性進行細致的研究。
  6. This article deduces molecular beam ' s momentum distribution function, calculates mean momentum, root mean square momentum and furthorest possible momentum, and compares them with the characteristic physics quantities corresponding to molecular beam ' s speed distribution function one by one

    摘要本文首先推導出分子束的動量分佈函數，然後計算了平均動量、均方根動量和最概然動量，並與分子束的速率分佈函數相應的特徵物理量逐一比較。
  7. 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。
  8. We also study the transverse momentum distribution of dy pairs for n - p collision at the energies of rhic and lhc

    並且在同樣能量下，給出了dy輕子對的橫動量分佈。
  9. How to use local condition and ecnomical dveloping and the elementary education, normal school in different regions increases the impact and momentum of reform, rationally transform and optimizes distribution of educational resources. increases the utilisation ratio of educational resourses, enhances the strengthen of running a school. on the basis of increasing running ratio of a school, with destination and polity, it is to promote the adjusting and improving the struture of education in normal school. to 2010, completely fulfill the transition from normal school to normal college is the historical choice and the future ideal direction of the developing education of normal school

    不同區域的中師學校，如何根據當地經濟發展狀況和基礎教育現狀，在現有條件下加大改革力度，合理重組、優化配置教育資源，提高教育資源利用率，增強辦學實力；在逐步提高辦學效益的基礎上，有目的、有計劃地促進中師教育層級的提升，到2010年，基本實現三級師范向二級師范的過渡，是中師教育發展的現實選擇和未來理想路向。
  10. The study of the effect of the momentun distribution of target nucleons on the scdw calculation is performed, which shows that the larger nucleon momentum compenents affect the double differential cross sections at backward and forward angles, while smaller nucleon momentum compenents affect the cross sections near the qes angle

    本文還分析了核子動量分佈對scdw模型雙微分截面計算的影響，發現大動量的核子成分的增加會導致截面計算值在大角度區域和極小角度區域的增大；小動量核子成分的減小會導致截面計算值在準彈性散射角附近的減小。
  11. The flow equations are solved using finite difference technique. using body - fitted curvilinear coordinate system treated the boundary conditions. by iteratively solving the flow governing equation and the blade equation, the design of axial flow pump impeller in the quasi - three - dimensional rotational flow can be performed according to the angular momentum distribution, the blade which was designed in the lifting method, flow channel and the blade thickness given

    其次在流動無粘性、不可壓及考慮葉片厚度的條件下，依據葉輪內的流動特性，推導了葉輪內三維流動周向平均流動控制方程以及葉片方程；在貼體坐標系中，採用有限差分法求解流動方程和葉片方程；在採用升力法設計出的葉片作為初始葉片、給定葉片速度矩分佈、葉片厚度分佈和葉輪軸面流道幾何形狀條件下，迭代求解流動控制方程及葉片方程，實現了軸流泵葉輪的準三維方法設計。
  12. In order to predict hydrodynamic characteristics a computational system is developed including determination of the pressure distribution on a wing section by use of the conformal mapping method and panel method respectively and of the flow in boundary layer according to the thin shear layer approximation ( tsl ) for navier - stokes equation approach. the wing sections of naca4412 and naca0012 are applied to test the computational system. the numerical inspection shows that the panel method with better precision and the momentum and the displacement thickness of boundary layer can be used to complete this calculation

    本文分別用守屋的保角變換法和基於源匯渦分佈的面元法，建立了計算槳葉表面壓力分佈的數學模型；應用納維-斯托克方程的薄層近似理論模式和有限差分數值方法，建立了計算機翼表面邊界層內部流動的數學模型；應用槳葉表面邊界層內部粘性流動和外部勢流流動在邊界上的匹配演算法，建立了槳葉表面二相流流動的計算方法和相應的計算機程序。
  13. Abstract : a continuity wave model is put forward for the dispersion processof liquid - liquid two - phase system, by coupling mass and momentum conservation equations of two - fluid model. the conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model. the phenomena of catastrophic inversion and transitional inversion are explained. the effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model. according to the theory herein, emulsion inversion is the regime transition of liquid - liquid system due to the instablity of a dispersion process. the effect of drop size distribution on the maximum volume concentration of a liquid - liquid emulsion only occurs in a certain range of weber numbers

    文摘:以雙流體模型為基礎，通過質量守恆方程和動量守恆方程的耦合，提出了液-液兩相系中彌散傳質的連續波模型.由該模型得到彌散傳質過程阻塞和彌散傳質過程弱不穩定性產生的條件，計算了液滴尺寸及其分佈對乳化液極大堆砌分數的影響，解釋了劇變型乳化逆變和漸變型乳化逆變現象.研究結果表明，乳化逆變是由於彌散傳質過程的不穩定性而引起的懸浮體型態的改變，隨液滴尺寸多分散性的增大，極大堆砌分數增大；隨液滴平均尺寸的增大，多分散性對極大堆砌分數的影響減弱；當韋伯數足夠大時，液滴尺寸及其分佈對乳化液極大堆砌分數無影響
  14. Orsm includes physical processes such as radiative transfer, phase changes of water substance, re - distribution of energy due to cumulus convection, transport of momentum, energy and moisture by turbulence, and exchanges between the atmosphere and the surface layer

    ： orsm中的物理過程包括輻射交換水分的相變積雲對流所帶動的能量重新分佈湍流所引發的動量能量和水汽輸送大氣與地面層之間的各種交換等等。
  15. Particularly an analytical expression for the longitudinal momentum distribution is derived if the density distribution of halo nucleons is assumed as a gaussian type function. a direct connection of the width of the momentum distribution to the bound state wave function of halo nucleons is established

    特別是在暈核子的縱向和橫向密度分佈可分離的情況下，如高斯密度分佈，進一步求解了縱向動量分佈寬度的解析形式，建立了分佈寬度與暈核子束縛態波函數之間的直接聯系。
  16. By widening the width of gaussian transverse momentum distribution in string fragmentation. luciae reproduced the o mesons rapidity distribution, transverse mass distribution, and also the enhancement factor of o meson in pb - pb relative to p - p collisions

    介子； 『 』 『土影響不人， lu 1模擬的結果同時大明：通過加寬弦碎裂為叨對的內稟描動量分佈的寬度， 。
  17. We further formulate the momentum distribution of a fragment in the halo nucleus scattering. its detailed expressions in the elastic dissociation process with considering the final - state interaction and the inelastic dissociation process without considering the final - state interaction are obtained, respectively

    進一步還詳細推導了暈核散射的碎片動量分佈（包括縱向、橫向動量分佈） ，得到了考慮末態相互作用的彈性分離過程和不考慮末態相互作用非彈性分離過程的暈核散射碎片動量分佈。
  18. Measurements of azimuthal anisotropies in the transverse momentum distribution of particles can probe the very early stages of ultra - relativistic heavy - ion collisions

    這其中，最重要的就是相對論流體力學。其基本假設是系統達到了局域的熱平衡和化學平衡。
  19. A nuclear dependence of the qt distributions, should also occur for high - mass pairs produced in nuclear drell - yan process. in 1987, the na10 collaboration in cern present the first clear evidence for a nuclear dependence of the transverse momentum distribution of massive muon pairs produced in hadronic interactions

    在高能強子反應中，末態強子的大橫動量分佈具有明顯的核相關性，這種效應也應出現在高能核drell - yan過程的大質量輕子對產生過程中。
  20. Using rqmd to generate 80, 000 monte carlo mini - bias events of 197au + 197 au collisions at snn = 200gev, we study the transverse momentum distribution, particle ratios and the freeze - out time and transverse radius distributions of final state hadronic system, comparing them with the reported experimental results

    通過研究末態強子的橫動量分佈以及粒子比，特別是對帶電、 k 、 p和（ ? ）的平均橫動量的研究及與實驗比較，我們試圖研究在高能核碰撞中早期部分子集體行為。
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