格林函数

Topics covered include: waves in media, equivalence principle, duality and complementarity, Huygens' principle, Fresnel and Fraunhofer diffraction, dyadic Green's functions, Lorentz transformation, and Maxwell-Minkowski theory.

它包含以下的主题：介质内的波、等效原理、对偶性质和互补性质、惠更斯原理、菲涅耳绕射与夫琅和费绕射、双重格林函数、洛伦兹变换以及马克斯威-明可斯基(Maxwell-Minkowski)理论。

It is shown that the expression of electric-type dyadic Green's function is the sum of an eigen-mode expansion containing nine dyadic components and a singular term.

得到的电型并矢格林函数表达式由包括九个并矢分量的本征模展开式和一个奇异项组成。

In chapter three,we have studied the energy and effective mass ofelectron in a quantum well using Green′s function method.

在第三章中，我们使用格林函数方法研究了量子阱中电子的自能和有效质量。

In chapter four,we have studied the self-energy and effective mass ofelectron in a single heterostructure using Green′s function method.

在第四章中，我们使用格林函数方法研究了异质结中极化子的自能和有效质量。

In this thesis, based on the quantum chemistry calculation, applied elastic scattering Green's function method, different gold-molecule-gold systems are investigated.

本文在量子化学计算的基础上，利用弹性散射格林函数的理论方法，对由金属-分子-金属构成的分子体系进行了计算。

The current-voltage curves at different pressure are calculated using the elastic scattering Green function theory.

利用弹性散射格林函数方法计算了不同压力下分子结的伏安曲线。

Electric machinery and electrotechnology ; Multi-layer earth structure ; Green Function ; Numerical calculation

电机电工；多层土壤；格林函数；数值计算

Because the coupling condition of NNGFM arises from the net current continuity imposed at the volume element interfaces, the relatively complex conversion formulation for partial current continuity condition of NGFM is unnecessary when applying G. E. T., and computation time is saved. The coefficient matrix of the coupled equations is tridiagonal, so it can be solved by forward elimination and backward substitution method.

NNGFM的基准校验及在大庆200MW核供热堆(NHR-200)上的应用表明，NNGFM计算精度和速度与第三类边界条件格林函数节块法NGFM〓相当，在相同精度下速度比CITATION能快1000倍；NNGFM给出的本征值、功率分布较NNGFM误差能减少一半以上，为更精确计算工作期、卡棒当量提供了条件。

Based on the method of Dyadic Green s functions,the radiation patterns of the microstrip antennas printed on the surface of elliptic cylinder are analysised and calculated in this paper.

文中采用并矢格林函数方法，分析和计算了椭圆柱面上微带天线的辐射特性，并讨论了辐射特性随离心率的变化规律。

The most suitable approach up to now for studying excited state properties of extended systems is the Green function method.

目前，最适合于各种系统激发态性质研究的方法是格林函数法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。