| 1. | The inference of formula of electric dipole moment radiant field
电偶极辐射场计算式的推导 |
| 2. | Theoretic study on orientation polarization of electric dipoles about leather
皮革材料偶极子转向极化的理论研究 |
| 3. | A . c . electric dipole field
交流电偶极场 |
| 4. | Electric dipole moment
电偶极矩 |
| 5. | Finish electric dipole radiation . qualitative aspects of electric quadrupole and magnetic dipole radiation
31结束电偶极辐射之讨论。定性解释电四极特性及磁偶极辐射。 |
| 6. | It is important to analyse electric field of electric dipole in studying polarization and electric field of dielectric and electromagnetic wave radiation etc
本文讨论了几种不同情况下电偶极子在空间激发的电场问题。 |
| 7. | In the following section , the thesis demonstrated the robustness of the proposed method in the computation of radiated electromagnetic fields of switched mode power supplies by means of a numerical study on the electromagnetic fields of an electric dipole antenna
应用本文开发基于pml吸收边界条件三维时域有限差分计算软件，计算了电偶极子天线的三维辐射电磁场，并将计算结果与解析解进行了对比分析，验证了时域有限差分法计算高频开关电源辐射电磁干扰的有效性。 |
| 8. | We used density functional theory ( b3lyp ) , which is becke ' s three parameter hybrid function using the lee , yang and parr ( lyp ) correlation function . the basis sets we used is 6 - 31g * . the excited state energies and electric dipole transition moments are calculated by time - dependent dft
分子的几何结构在杂化的密度泛函理论( dft ) b3lyp水平上优化，其中电子的交换能采用becke的三参数交换函数，而电子的相关能采用lee , yang ，和parr的相关能函数，选用的基矢是6 - 31g * |
| 9. | Based the basic principle of the accumulation of induced electric charges across the resistivity discontinuities and the induction current channeling inside the conductive bodies inspirited by the mt field , we set up the relation between the measured field on the earth surface and the distribution of the induced source underground by means of the defining the electric charge occurrence probability function and the electric dipole occurrence probability function and the spacial distributing of the " correlation probability " . the " image " of the field sources underground , or the distributing graphy of the induced electric charges and the induced current in the mesuring area can be drawed , from which we can get the outline of the geological anomaly on the meaning of the probability
大地电磁场概率成像方法是一种新的地球物理成像反演方法，它是根据在大电磁波场的激励下，地下介质电阻率间断处产生感应电荷积累和导体内部产生感应电流，从而产生感应电磁场的原理，相应地定义了感应电荷发生概率函数和感应电偶极子发生概率函数，通过“相关概率”发生的大小的空间分布，建立了地表观测场与地下场源空间分布的内在联系。地下场源分布概率的“像” ，即测区的感应电荷和感应电流的概率的分布图像，就是测区内地质体在概率意义下地质异常体的分布轮廓。 |
| 10. | This thesis contributed to the comprehensive study of the finite - difference time - domain ( fdtd ) method and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies . the work includes mainly three parts : the study on the performance of pml absorbing boundary condition applied to pseudo low frequency electromagnetic problems ; the validation of the fdtd method with pml absorbing boundary conditions and the corresponding computer software based on the numerical study of the electromagnetic field of an electric dipole antenna , and its application to the numerical computation of radiated electromagnetic fields in switched mode power supplies ; the development of an improved alternating direction implicit finite - difference time - domain method
在综合前人工作基础上，本文对时域有限差分( fdtd )法及其在开关电源辐射电磁场数值计算中的应用进行了系统的分析和研究，其核心内容包括：伪低频电磁场数值计算中pml吸收边界条件性能的研究；基于基准问题?电偶极子天线三维辐射电磁场，验证了本文构造的基于pml吸收边界条件的三维fdtd法及其计算软件，并应用于高频开关电源辐射电磁场的数值分析；提出了一种改进的交替方向隐格式时域有限差分法。 |
