A backscatter model was developed for measuring wind field with far-field approximation method.
提出了一种基于远场近似法建立的大气风场测量散射模型。
Very accurate predictions of planetary orbits require corrections to the central-field approximation.
想要非常准确地预言行星的轨道，就需要对中心场近似进行修正。
Under the mean-field approximation, the free-energy functional of binary mixtures of star-like polymers is derived.
在平均场近似下求得了星型高分子共混体系的混合自由能及其相分离动力学方程。
The finite cluster approximation method is conceptually as simple as an ordinary mean field approximation, but gives much better results.
有限集田近似方法与平均场近似相比，在数学上处理同样简单，但可给出更好的结果。
In the mean field approximation, the steady state equation is given, and the linear stability analysis of the steady states is performed.
在平均场近似下给出了定态方程，分析了定态线性稳定性。
The two-photon equation of state including dynamical Stark shift and relaxation parameters is obtained and studied under mean-field approximation.
在平均场近似下求出的状态方程包含了动态斯塔克效应及弛豫时间参数。
By using the mean-field approximation method, the critical behavior of the mixed-spin XXZ model with DM interaction on the cubic lattice is studied.
利用平均场近似的方法，研究了立方晶格上具有DM相互作用的混合XXZ模型的相变和临界性质。
The effect of diagonal disorder on the upper critical field of the local electron pair system is studied in the framework of the mean field approximation.
本文应用平均场近似讨论了对角无序对局域电子配对系统的上临界磁场的影响。
However, the values of the parameters of the function are different from those derived using the classical Landau theory based on the mean field approximation.
但在聚合体存在的情形下，函数参数的数值不同于在均场近似下由经典朗道理论所得到的数值。
Interactions not contained in the original Hamiltonian are generated by this unitary transformation. With an average field approximation, we can close the flow equations.
由于在幺正变换下产生了新的高阶相互作用项，利用平均场近似手段得到了系统参数随流参数变化的流方程。
The expression of complex amplitude is given in reference plane vertical to the optical axis by far-field approximation when the line source and the principal axis are at any Angle.
在柱坐标下从微分波动方程出发，推导柱面光波的场分布，并利用远场近似条件导出当线光源与光轴成任意角度时，在垂直光轴方向的参考面上的复振幅表示。
The orientational entropy term, in the mean field approximation form, is replaced by the one including the molecular short range correlations, so a new free energy expression is obtained.
用包括了分子短程关联的取向熵代替原来平均场形式的取向熵项，得到新的自由能表示。
In spatial game models, mathematical methods of comparing the local payoff structures, mean-field approximation, pair approximation, as well as invasion probability analysis are also used.
比较邻域结构、均匀场近似、偶对近似、以及入侵概率分析的数学方法也被用来研究空间博弈模型。
By using the reconstructed far-field approximation space covariance matrix at the same bearings from the revised near-field space covariance matrix, the bearings of multiple sources can be obtained.
通过对近场空间协方差矩阵进行修正，用重构在相同方位上的远场近似空间协方差矩阵确定声源方位角。
Not concerning the influence of electron on field, the theoretical analysis of electron movement in MILO is made under the condition of planar electrode approximation.
在不考虑电子本身对场影响的前提下，我们采用平板近似对MILO装置中电子的运动规律进行了解析推导。
By use of numerical approximation method, the paper USES the polynomial to approach segmentally the transient electric field from dipole dipole array.
本文采用数值逼近的方法，逐段用多项式表示偶极—偶极排列的瞬变电场。
For microwave diffraction imaging, we use the WKB approximation to estimate the total field in the dielectric object.
对于介质目标微波衍射成象，本文引入了WKB近似来模拟目标内部总场。
Then we study the accuracy of Kirchhoff's approximation in the scattering of light field from the random self-affine fractal surface.
在此基础上，对采用基尔霍夫近似进行自仿射分形随机表面的散射光场数值计算的精确程度进行了研究。
The interaction of a two-level atom with a thermal radiation field for single-photon processes and two-photon processes without rotating wave approximation is analysed.
两能级原子与外部环境(热库)相互作用时，采用非旋波近似，研究原子与热辐射场单光子和双光子作用过程。
More precise analytic expressions for ferromagnetic resonance of single crystals are calculated, the approximation being carried to terms quadratic in the magneto-crystalline anisotropy field.
本文导出了更精确的单晶铁磁共振公式，其近似度达到磁晶各向异性场的平方项。
A theoretical modeling approximation is offered for both improving field data acquisition and suppressing noises in indoor data processing.
对于提高野外资料采集质量和在处理中压制干扰波提供了一个理论模型近似。
The stress field around the crack tip is simulated via the constructed Back-Propagation Neural Network (BPNN) whereby achieving the approximation of the stress field around the crack tip.
通过构造反向传播神经网络，对裂纹尖端的应力场进行模拟，进而实现对裂纹尖端应力场函数的逼近。
This paper gives a class of approximation identity operators on the integer domain of a local field, and a theorem on estimates of their approximation degree.
本文在局部域的整数环上给出了一类逼近恒同核和关于它们的逼近阶估计的定理。
Within the effective mass approximation and the perturbation method, the electron and hole ground-state energy in a magnetic field in the rectangular quantum wire are calculated.
在有效质量近似下，利用微扰理论研究了矩形量子线中电子和空穴的基态能量。
In particular, we have found that even at the mean field level the naive vacuum saturation approximation is not a good approximation when we consider nonlocal four quark condensate.
这里我们需特别指出的是在计算非定域的四夸克凝聚时以往经常采用的朴素的真空饱和假定不再是一个好的近似。
This paper deals with the algorithms of equivalent dipole approximation and cubic interpolation for the electric field component of ground electrical bipole source.
基于偶极—偶极电极装置的瞬变响应表达式，建立了双极源电场的等效偶极和三次插值的快速近似算法。
Finite motion of massive scalar particle in gravitational field of a black hole with weak relativistic approximation is discussed.
讨论了弱相对论近似下黑洞引力场中重质量标量粒子的有限运动。
Owing to the strong magnetic field in the magnetosphere, the magnetic field configuration essentially satisfies the approximation of the force-free field.
由于磁层内部的磁场很强，其位形基本满足无作用力磁场近似。
By using the method of small parameter expansions the present boundary-value problem is solved. Thus the formula in the second approximation for the stress field is obtained.
本文运用小参数展开法求解了这一大变形问题，获得应力场的二级近似公式。
Phase control of free-free transitions in bichromatic laser field is investigated employing the Born approximation.
本文利用玻恩近似理论对双模激光场中自由 -自由跃迁过程中的相位影响进行了初步研究 。
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