near field region 中文意思是什麼
near field region
解釋
近場區-
The well correlation times persist for about six months and the incidence level is reach or pass 0. 01. the meridional wind field which persistly impacting on sst in kuroshio region is near the west tropical pacafic. the result also behave as distinctly positive correlativity. afterwards we investigate the relationship between sst in kuroshio region and ninoc, 4 region and integrate the front conclusion. as a resultjt display that the sst in kuroshio region persists for positive relevance during the course of el - nino and inversely during the course of la - nina. subsequentl y the synthetic fields of kuroshio region ' s ssta in el - nino and la - nina years have proved the front outcome
對與黑潮海溫異常變化關系密切的風場關鍵區及兩者的相互關系研究表明：黑潮本身的風場和其源地北赤道流海域的風場異常對黑潮海溫的影響僅限於同期及海溫滯后1到2個月，而能持續影響黑潮海溫異常的經向風場的關鍵區出現在赤道西太平洋（ 140 - 160e ， 5s - 5n ） ，緯向的關鍵區則在赤道中太平洋（ 160e - 150w ， 5s - 5n ） ，且緯向關鍵區的強度和范圍均大於經向，兩者對黑潮海溫的影響均能持續六個月左右。 -
In this paper, high heat penetration into a moving particulate bed is described mathematically with a comprehensive heat and mass transfer model. the distribution of gas velocity and pressure, the temperature field of gas and solid in the moving particulate bed are examined for different conditions. the results show that thermal penetration into the moving packed - bed particles by fluid flow in porous media is high only in the position near the gas entrance. the thermal penetration thickness tends to increase with the fluid flow velocity and decrease with the particle moving velocity. in the region of thermal penetration, the porosity of solid bed has significant effect on gas field and pressure loss. it is feasible to reduce the gas pressure loss by a larger width / height packed bed in design and operation. the correspondence between thermal infection depth and particle bed height would be helpful to keep high oapacity of reactor and reduce the cost of operation
針對移動顆粒床中物料層內的高溫氣體滲流傳熱現象，考慮滲流與傳熱的相互作用，採用局部非熱平衡假設建立了多孔介質滲流傳熱物理數學模型並進行了數值計算.研究了不同情況下床內填充多孔介質中的流速、氣固溫度和床層壓力損失.計算結果表明，高溫熱氣對移動床顆粒料層的熱滲透主要發生在滲流入口端區域，增大入口滲流速度以及減小床層物料下移速度將導致物料溫度沿床高慢速下降，熱滲透深度擴大，熱滲透作用區域內的物料溫度水平提高.在熱滲透作用區域，孔隙率對流場和壓力損失有很大的影響.研究結果對于移動顆粒床反應器的設計與運行具有一定的參考作用 -
The temperature field along the axis, axial velocity, the turbulent energy, and the concentration of the particles were investigated when the temperature field varied. the numerical experiment shows that the thermophoresis force changes the concentration of the 2 - micron particle, decreasing in the main flow and increasing in the near - wall region
數值實驗的結果表明在兩相流模型中添加熱泳力源項會對2微米顆粒在流場中的濃度分佈有很大的變化，主流區的顆粒濃度降低，近壁區顆粒濃度在溫差不大的時候，提高幾十倍。 -
In order to verify the simulation field, the ultrasonic wave field radiating by a planar transducer was measured by small ball. by comparing the simulation field with the measured field, it is found that mgb is accurate in the far - field and most near - field region
為了驗證聲場模擬的可靠性，利用小球法測量了直探頭的水中輻射聲場，將試驗聲場和模擬聲場比較，發現多元高斯聲束模型在遠場區和大部分近場區都是有效的。 -
In simulations, all important phenomena, such as non - neutral sheath widening near cathode, cathode electron emitting, current channel migrating to the load side of the plasma, ion accelerating toward cathode and magnetic insulation of cathode emitting electrons etc, have been observed and depict the internal physics of this device. also presented is the influence of cathode emitted electrons on phenomena in the conduction processes of pegs. the simulation results show, without cathode emitted electrons, rapid magnetic field penetration takes place only in region near the cathode, with cathode emitted electrons, magnetic field penetration takes place in all plasma region
診斷發現了陰極表面非中性鞘層的形成、陰極電子發射、電流通道的漂移、等離子體離子加速以及陰極電子磁隔離等物理現象，揭示了這一斷路器件的物理機制；分析了陰極電子對peos導通過程中的物理現象的影響，模擬結果顯示：忽略陰極電子作用，磁場滲透現象主要出現在陰極表面區域，考慮陰極電子作用，磁場滲透現象出現在整個等離子體區域。 -
Radiating near - field region
輻射近場區 -
Reactive near - field region
感應近場區 -
And then simulations of gas - particle two phase plane wake and gas - particle two phase plane jet were carried out by using this model. after numerical simulations of the two flow fields were finished, series of analytical work was done. first, the distribution of time - averaged velocity, turbulence intensity was analyzed, and some of the simulation results were compared with those of the experiments ; the coherent structure of vortices in the near wall region of the plane wake flow were studied by describing the evolution of the eddy structures, including the forming, developing and shedding from the wall of the vortices in the near wall region ; the coherent structure of vortices in the whole field was also studied, such as the forming, developing, moving, pairing and merging of the eddies etc.
在對上述兩種流動形態的二維大渦模擬研究中，首先全面地分析了氣相時均流場的速度、湍流強度的分佈規律以及氣相速度的脈動規律等並就部分數值模擬結果與實驗結果進行了對比研究；分析了平面尾跡流場中近壁處旋渦擬序結構，全面和逼真地反映了近壁處旋渦的生成、發展和脫落的規律；描述分析了平面尾跡流和平面射流的全場流動旋渦擬序結構，從整個流場的角度反映旋渦的生成、發展、運動以及旋渦之間相互配對、合併的作用規律等。 -
From the exact expression of the field, we obtain a multipole polynomial expansion, and under the paraxial condition we furthermore obtain the approximate expression. the loffe trap, consisting of two coils with parallel currents and four straight conductors with currents in alternating directions, is one of the most important traps. we specially study the field structure of it by using both the exact expression and a multipole polynomial expansion that facilitates studies of classical or quantum orbits. if the region near the origin is of interest, we may obtain a simple expression of the field and this configuration may be called idealized loffe trap
若只討論阱中的近原點區域時，阱中的磁場可以呈現出一種簡潔的形式，人們把它稱為理想ioffe阱。磁矩反平行於磁場的中性粒子在阱中與磁場發生相互作用，藉助相互作用勢，可以獲得粒子在阱中的經典運動方程。在一定的近似條件下，我們可以採用逐次近似的方法，使方程簡化，其中三個分量式中關于z的方程比較容易求解，而關于x 、 y的方程則演化為我們熟悉的馬丟方程的形式。 -
Conjugate heat transfer calculation was carried out, with simple algorithm, studied up on boundary condition and modified pressure adapting algorithm, to give prediction on velocity field inside the disk cavity, the whole temperature field including fluid region and solid region, and heat transfer coefficient at fluid - solid interface. the simulation results indicate, ( 1 ) in rotor - stator disc cavity, the secondary flows near rotating disc stronger than which near state disc, keeps temperature of rotating disc lower than state disc ' s
為了使計算方法得到更多的算例驗證，本次研究做了若干算例，文中選出其中四個算例進行分析，計算結果表明： （ 1 ）在轉靜盤腔結構中，轉盤表面的二次流大部分區域都比靜盤表面的要強，所以轉盤表面換熱情況較好，轉盤的總體溫度水平要低於靜盤。 -
Chaper 4, we put forward the concept of the near - field speckles and study their properties by the numerical solution of the integral equation based on the green ' s theorem. we study the near - field speckles produced the by random self - affine fractal surfaces of dielectric medium. the speckle intensities evolve considerably in the near - field region and the local fluctuations in them disappear in the distance of a wavelength
在第四章中，我們提出了近場散斑的概念，並依據介質界面電磁波的格林積分摘要方程對自仿射分形隨機表面產生的散斑光場進行了數值計算模擬研究，發現近場散斑分形特徵與自仿射分形隨機表面的特性有關，且這種分形特徵在非近場區域消失。
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