field pattern
英 [fiːld ˈpætn]
美 [fiːld ˈpætərn]
场方向图； 辐射方向图
双语例句
- Reserved extended table field pattern
保留的扩展表字段模式 - Recover the acoustic wave impedance coefficient from the incomplete data of the far field pattern
利用远场模式的不完全数据反演声波阻尼系数 - A scanning mirror short millimeter wave field pattern automatic measuring system
短毫米波波束场分布反射式自动测量统系 - Study on the Characteristic and Field Pattern of Asymmetric Coplanar Waveguides
非对称共面波导的特性及其场结构图的研究 - Aim To recover the impedance coefficient from the far field pattern of the scattered wave of the acoustic scattering problem with impedance boundary condition.
目的从阻尼边界条件声波散射问题的散射场的远场模式出发去反演阻尼系数。 - Far field pattern numerical analysis of reflector antenna based on different grid forms Quadrilateral Mesh Generation Based on STL File Format Model and Mesh Smoothing
基于不同网格形式的反射面天线方向图分析STL格式文件的四边形网格剖分与网格光顺 - It calculates the cutoff wavelength and single-mode bandwidth at the change of the ridge dimensions, gives the dominant mode field pattern and the corresponding curve of the deformation vs.
计算了脊的尺寸变化时的截止波长和单模带宽，给出了主模场结构图以及变形对截止波长和单模带宽影响的关系曲线，并分析了传输特性随对称脊波导结构尺寸变化的情况。 - Real-time measurement of two dimentional far field pattern for semiconductor lasers
半导体激光器二维远场分布图的实时测量 - This geothermal field pattern has certain representativeness.
这种模式具有一定的代表性。 - Current groundwater dynamic field pattern may be accurately set up through investigating migration dynamics and passages, water supplying mode and recharge area as well as water draining mode and discharge area.
通过研究地层流体的运移动力、运移通道、供水方式与供水区、泄水方式与泄水区，可以较为准确地建立起现今地下水动力场模式。 - We realized the computation in inverse medium scattering problems with multi-experimental data of far field pattern. Moreover, the analytical result of that the selected regularized parameter in each iteration accord with Tikhonov regularization theory from a few of numerical experiments is stated.
同时在文中考虑了多实验数据下远场测量的反散射问题的计算，并在数值实验中分析和总结了不同扰动下每步迭代的正则化参数，说明了它的选取符合Tikhonov正则化理论。 - Through numerical calculation and analysis, the effects of structure parameters on far field pattern and threshold current density are studied.
通过数值计算分析，详细研究了结构参数对远场及阈值电流密度等的影响。 - Pulse parameters and its influence on pulsed antenna measurements is presented in this paper. On the basis of the plane-wave theory of time-domain fields, formulae for time, frequency-domain far-field pattern and near-field far-field transformation is given.
研究了脉冲参数及其对测量的影响，根据时域场的平面波理论，给出了根据惠更斯源得到的时、频域远场方向图以及近远场变换公式。 - In order to reconstruct the shape of scatterer D, we establish the relation between the scatterer and the far field pattern. The relation can be fixed by so called far field operator F.
为了能够重构散射体D，我们可以建立起远场模与散射体之间的联系，这种联系可以通过所谓的远场算子F来确定。 - In this paper the general formulas on calculating far-field for the Vee Dipole Antenna at the space are derived from method of curvilinear integration and the field pattern, the radiation resistance and the directivity are given.
本文利用曲线积分的方法，导出了V型偶极子天线在空间任一点处远区场的一般数学表示式以及方向性函数、辐射电阻和方向性系数的计算式。 - Then, two optimal algorithms for global optimization are proposed. One is the genetic algorithm for constructing acoustic field pattern control and the other is the eigenvector algorithm for the same purpose.
在对空间声场提出合理的优化目标函数后，提出了两种优化算法进行全局寻优：一种是遗传算法构造的声场模式控制算法； - The text computes the eigenvalue of double ridged waveguide, single ridged waveguide and unsymmetry ridged waveguide, transmission of three kinds of ridged waveguides with ridge on the narrow wall are solved for and the useful curves on cutoff wavelength, bandwidth and field pattern are presented.
编程计算了双脊、单脊和不对称脊波导的特征值，求解了三种脊位于窄边的脊波导的传输特性，并给出了截止波长和单模带宽曲线以及场结构变化。 - The far field pattern has 3 lobes, and the divergence of each lobe is about 10 mrad.
DLA远场出现了3个瓣，每瓣发散角为10mrad左右； - And a more reasonable photoconductive mathematical model is employed here. The constituent of switch output, influence of laser pulse energy and width upon the switch performance and the responses of three-dimension field pattern in switch at different time are presented.
本文还讨论了开关输出信号的模式组成和激光脉冲能量、脉宽对开关性能的影响，并给出了光电导开关响应在不同时刻的三维图形。 - This paper describes the application of finite difference method for obtaining the cutoff wavelength and the field pattern of asymmetric single ridge waveguide, and gives the specific equation for computing related parameters.
提出了用有限差分方法分析不对称脊波导主模的截止波长和场结构图等传输特性，推导出用有限差分方法计算相关参数的公式。 - We establish three basic results about the far field pattern and far field operator in the case of conductive problem: reciprocity for the far field pattern and the normality and injectivity properties of the far field operator.
本文中，我们将推导关于远场模式和远场算子的三个基本结果，即关于远场模式的互换性以及关于远场算子的正则性和单射性。 - The effects of the dimension of the cylinder, of the relative position of the antennas with respect to the cylinder and of the method of feeding to the resultant field pattern are analyzed.
分析了柱体边长、天线与柱体之间的相对位置和天线的馈电方式对合成场强方向图的影响。 - Eventually, the objective of optimal field pattern control is achieved successfully. The genetic algorithm has better characteristics as compared with the eigenvector algorithm.
用遗传算法和特征向量算法对声场控制模式控制的仿真研究表明：能达到声场控制模式优化的目标，而遗传算法比特征向量算法具有更多特征优势。 - However, a directly synthesis method of the acoustic field based on the pseudo-inverse matrix can produce the multiple-focus field pattern. It provides a method for controlling acoustic field patterns.
采用基于伪逆矩阵的声场合成算法，直接形成了多焦点的控制模式，为焦域控制提供了新的思路。 - The stress fields of en echelon faults with different geometry and mechanical conditions were considered by dynamically numerical simulation. The effect of geometry on stress field pattern is discussed.
用数值模拟方法研究了几何、力学条件不同的雁列构造模型的应力场，探讨了几何参数对应力场的影响。 - This paper presents an electromagnetic field pattern of single collinear wire cleaning electrode which is in the circular vacuum tube of the storage ring, which is reduced to achieving a solution of the boundary value problem of the electromagnetic field.
研究了储存环圆真空盒中单根直导线结构清洗电极的一种电磁场形态，将此电磁场求解归纳为非轴对称双圆柱面边界的边值问题； - Then the surface current, surface field pattern of structure illumined by the electromagnetic field is simulated.
然后对电场作用下结构表面的场和电流图案进行模拟。 - By cylindrical wave expansion method, the far field pattern of the theoretic analysis is gained for the use of cylindrical near-field data. Comparative analysis of simulated and calculated far-field pattern is given.
利用柱面波谱展开法对近场数据到远场方向图的计算理论分析，并对利用算法得到的理论远场方向图和仿真方向图进行了比较分析。 - The end fire method is used to measure the near field pattern of the buried waveguide.
用端面耦合技术研究了埋层波导的近场光强分布。