momentum field 中文意思是什麼
momentum field
解釋
動量場-
In theoretical analysis, the motion of radially - emitted electron beam in diode region and drift region has been analyzed, and the relation between radial momentum or current of electron beam and the guiding magnetic field has also been studied, then the possibility to optimize the guiding magnetic field has been derived. the motion of radially - emitted beam electrons in smooth bore magnetron and smooth bore milo has also been studied theoretically. at last, the motion of radially - emitted beam electrons in compound axial and azimuthal magnetic field has been studied
在理論分析中，初步分析了軸向發射條件下電子在二極體區域和漂移區的運動規律，電子徑向動量隨著外加磁場變化的規律，以及電子束電流隨著外加磁場的變化規律，還有二極體區域磁場優化的可能性;分別研究了有軸向磁場時以及有角向磁場時徑向發射的電子在光滑陽極結構中的運動規律，最後分析了在軸向和角向復合磁場中電子的運動規律。 -
Adding momentum item while correcting weight and limiting range of input value reduce error and improve diagnosis correctness greatly. while normalizing the input value, a new way is put forward that normalization is performed item by item according to its sort. in this way error training can avoid going into the flat field that is caused by existing of 0 or 1 of the input value
本文首先分析了故障診斷和神經網路的基本理論，並在此基礎上提出了神經網路對于變壓器故障診斷系統的適用性；文中將bp神經網路演算法用計算機實現；並針對其本身存在的一些缺點提出了一系列改進措施，通過在修正權值的時候增加動量項，並且限制輸入值范圍來減小誤差、提高系統的診斷正確率；在對輸入數據進行歸一化處理的時候，採取按類逐項歸一化的方法，避免了輸入數據出現0或者1而使訓練進入平坦區。 -
According to dynamical characteristic of the bubble motion in the flow field, and under the assumptions of isothermal system without interior heat source, uniform bubble size, and ignoring surface tension, the mathematical expressions for interfacial momentum exchanges have been deduced which include drag, virtual mass force, and lift
針對氣液泡狀流中氣泡運動力學特性，在系統絕熱、無內熱源、忽略表面張力、氣泡尺寸均一前提下建立了氣液相間曳力、虛質量力、升力的數學模型表達式。 -
Study on the conservation of electromagnetic field energy and angular momentum when neutral conductor spins in the even magnetic field
中性導體在磁場中旋轉時電磁場能量及角動量守恆研究 -
( 2 ) on the basis of continuity equation, momentum conservation equation, energy conservation equation, and substantial equation, coupled thm governing equations are derivated with giving up the assumption of local thermal equilibrium, adopting thermal elasto - plastic constitutive relation, taking the effect of temperature gradient on groundwater seepage ( analogous to soret diffusion ) and the effect of viscous dissipation of groundwater on temperature field of rock mass into account
（ 2 ）根據連續性方程、線動量平衡方程和能量守恆方程以及相應的物性方程推導了飽和巖體溫度場-滲流場-變形場三場耦合作用控制方程組。在推導控制方程組時舍棄了「局部熱平衡」假設，採用了熱彈塑性本構關系，考慮了溫度梯度對地下水滲流的影響（類soret效應）以及地下水的粘性耗散對巖體溫度場的影響。 -
We are interested in determining the amount of linear momentum delivered to the electron by the field.
我們對確定場傳遞給電子的線性動量的大小感興趣。 -
The average momentum that the atoms acquire from the optical field and the average force exerted on the atoms by the optical field has been determined
基於此特解分別研究了只有一個原子處于場內和兩原子均處于場內時不同的能級分裂情況。 -
In this thesis, a semi - classical model of the force on an atom is used to describe the motion of a two - level atom interacting with a standing wave laser field. the velocity dependent force and momentum diffusion are derived through optical bloch equations by using the matrix form of the continued fraction technique. by investigating the dynamic properties of atoms in laser field, we can control and manipulate the mechanical motion of an atom
本文利用半經典理論，從二能級原子在激光駐波場中所滿足的運動方程出發，推導出密度矩陣元所滿足的遞推關系，利用矩陣連分數方法求解出密度矩陣元，從而求出依賴于原子運動速度的光壓力與動量擴散系數，通過討論原子在激光場中的動力學行為，為原子在激光場中被囚禁、形成原子列陣以及可控制的量子態，從而為量子信息處理提供理論基礎。 -
“ there has been a real increase in momentum from us and the performances on the field are justifying a lot of people ' s optimism at the club
「我們狀態和士氣正佳，良好的表現印證了球隊的樂觀。 -
The characteristic of surface radiation, energy balance, albedo, bulk momentum transfer coefficient cd and bulk sensible heat transfer coefficient ch between surface and atmosphere over rainfed field are analyzed based on the data of land - surface process field experiment in the dingxi arid meteorology and ecological environment experimental station
利用中國氣象局蘭州乾旱氣象研究所定西乾旱氣象與生態環境試驗基地取得的地氣相互作用觀測試驗資料，分析了地表輻射、地表能量平衡、地表反射率、總體輸送系數等特徵。 -
Due to the ac stark effect, neutral atoms will undergo a dipole force from the inhomogeneous electromagnetic fields, while the dipole force acting on the atoms is proportional to the atomic dipole momentum and the gradient of light field
由於交流斯塔克效應，中性原子在非均勻電磁場中會受到的光偶極力的作用，偶極力的大小正比與原子的感生偶極矩及光場的梯度。 -
For multi - dimension acousto - electro - optical effect, the momentum mismatch is solely replaced by mismatch caused by electric field. based on this, one - dimension acousto - electro - optical coupled wave equation and multi - dimension acousto - electro - optical coupled wave equation are founded and their diffractive efficiency formulas are also deduced respectively
通過對聲光互作用耦合波方程中的動量失配進行修正，分別得到了一維反常聲電光布拉格衍射的耦合波方程以及多維聲電光效應耦合波方程的表達式，並進一步得到了相應的衍射效率的計算公式。 -
Based on acousto - optical coupled wave equation, the momentum mismatch is modified and acousto - electro - optical coupled - wave equations are founded. for one - dimension acousto - electro - optical effects, the momentum mismatch caused by ultrasonic wave is replaced by the summation of mismatch caused by ultrasonic wave and mismatch caused by electric field
根據晶體中光場所遵循的麥克斯韋方程組，以及聲場與光場間的參量互作用基本方程出發，在聲光耦合波方程的基礎上，系統地建立了聲電光效應的耦合波方程理論。 -
In some ways, an electron is just like such a spinning sphere of charge ? an electron has a quantity of angular momentum ( its “ spin ” ) and an associated magnetism, and in an ambient magnetic field its energy depends on how its spin vector is oriented
就某種意義而言，電子可類比於一個旋轉的帶電小球：它帶有角動量（就是自旋）以及伴隨而來的磁性，而它的能量是由自旋向量與外加磁場的關系來決定。 -
This paper compares the computing results of the one - way coupling method and two - way coupling method, and the result indicates that the one - way coupling method is applicable when the mass and momentum ratio of the discrete phase in the turbulence flow velocity field is small in the chamber
文中對採用單向耦合和雙向耦合計算方法的計算結果進行了比較，結果表明爐內離散相在流場中的質量及動量承載率較低時，單向耦合計算方法適用於研究對象的冷態流場計算。 -
System provide superiority momentum and middle - level dry and cold atmosphere for the hailstone convection. the ground pressure field and wind field provide low layer warm and humid condition. the second part is simulating water vapor combine conditions
此次冰雹強對流天氣過程主要是受深厚的低渦天氣系統作用的結果，為此次天氣過程提供了優越的動力條件，有利於對流層低層暖濕空氣的抬升和中層乾冷空氣的注入。
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