矢量方程

While there are the same material properties, shapes and similar boundary conditions, the field distribution of the former can be solved analogically by the later one.

密绕线匝的铁氧体电感器磁场强度H可认为仅有环向分量，若选择H为自由度，则成轴对称场分布；加载环向电流的电感器选择矢量磁位A为自由度时也呈轴对称分布，该文推导了这两类磁场在各自自由度下满足的微分方程。

From Maxwell's equations, with material constitutive relation of optically active crystal and boundary conditions of electric field on the boundary between isotropic media and crystal, through coordinate transformation, the formula of the direction of refracted wave for arbitrary direction incident monochromic plane wave was derived. Furthermore, based on the unit vector of direction of refracted wave, eigen waves of electric field, electric displacement vectors and direction of energy flow can be easily obtained.

从麦克斯韦方程组出发，结合旋光晶体的物质方程以及单色平面波从各向同性介质入射到晶体界面时电场的连续性边界条件，通过晶体主轴坐标系和界面坐标系的坐标变换，推导了任意入射方向的单色平面波在晶体界面上的折射方向的求解公式，进而利用所得的折射方向求解晶体中折射波的电场本征模、电位移矢量本征模和光线方向。

For soil surface the IEM model was used, and the specula surface approximation was used for flooded field.

利用矢量辐射传输理论建立了水稻微波后向散射模型，模型中考虑了稻田土壤无水的情况，用积分方程模型模拟土壤下垫面，而对稻田积水情况下的垫面用镜面反射近似。

Permanent Magnet Synchronous Motor driven by triphase sinusoidal current is studied object in this paper. The movement equtions in several coordinates are set up based on the analysis of electromagnetism restricted relation.

本文以三相正弦波驱动的永磁同步电机为研究对象，在深入分析其内在电磁约束关系的基础上，给出了不同坐标系下的运动方程，根据其数学模型，确定了电动车用电机在旋转坐标系下的矢量控制方案。

On the basis of the equivalent mechanism of swinging movable teethed transmission-crank-rocker mechanism, the tooth profile equation of central gear was derived by the use of complex numbered vector method.

基于摆动活齿传动的等效机构－曲柄摇杆机构，利用复数矢量法，导出了中心轮的齿廓方程。

To judge results of integral method of RTE, Monte-Carlo method is also applied to compute infrared properties of vectored nozzles, the results are in good agreement.

为了检验积分传输方程法的结果，本文还利用蒙特卡罗法计算了矢量喷管的红外特性，两种方法所得的计算结果是一致的。

From Maxwells equations, the vectorial and scalar wave equations for 3D, 2D and 1D are given out one by one using the slowly varying envelope approximation.

从电磁场的Maxwell方程组出发，分别导出了缓变包络近似条件下矢量及标量波动方程的三维、二维、一维形式，然后对其横向和纵向数值处理方法分别作了介绍。

The accuracy of Rayleigh scattering calculation affects the quality of atmospheric correction of the ocean color remote sensing significantly, and it is essential to solve the vector radiative transfer equation in plane-parallel atmosphere to improve the accuracy of Rayleigh scattering calculation.

瑞利散射计算精度对海洋水色遥感大气校正的精度起着关键作用，为了提高瑞利散射的计算精度，需要求解平行分层大气矢量辐射传输方程。

Based on numerical difference between the first order and high order Mueller matrix solutions, an iterative method for inversion of surface moisture and fraction per unit area of random small spheroids from polarimetric backscattering measurement is developed.

中文摘要：根据一层随机非球形粒子矢量辐射传输方程的一阶与高阶Mueller矩阵解的数值模拟及其差异，提出了在一些参数已知的条件下，用水平与垂直同极化和交叉极化的后向散射测量反演植被覆盖下地表湿度和植被散射元单位面积占空比的迭代方法。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。