Thought the WKB method is one effective method.
认为WKB法是一种行之有效的方法。
Therefore, the WKB method is useful in the non - even wave guide.
因此，可以把WKB方法直接用到非均匀波导中。
The course also examines approximation methods: WKB method, variational principle, and perturbation theory.
同时，本课程也解释了几种常用的近似方法：WKB方法、变分原理、以及微扰理论。
The mode equations of the planar waveguides with exponential index profiles are derived by using WKB method.
文应用WKB法导出了指数折射率平面光波导的模方程。
By using the WKB method and slowly-varying wave packet theory the main cause for the size change in Tropical Cyclone is analyzed.
应用小参数方法和缓变波包理论分析了热带气旋尺度变化的主要原因。
The attenuation of electromagnetic waves at an arbitrary angle of incidence by a nonuniform unmagnetized plasma is given by using WKB method.
给出了用WKB方法计算以任意角入射的电磁波在不均匀等离子体中的衰减。
From the results, we may draw that the generalized WKB is the development of WKB method with greater dominance in solving the problems with nonlinear wave number.
结果表明：广义WKB法是WKB法的一种推广，在求解非线性波数问题时具有更好的优势。
However, after a very long time the component associated with the discrete spectra becomes dominant, and the results obtained by WKB method might no longer be valid.
但当在经过很长时段之后，由于和离散谱部分相对应的扰动占主要地位，WKB方法所得结论可能不再成立。
In this paper, the WKB method and the finite-difference time-domain (FDTD) method are applied to study the electromagnetic characteristics of target coated with different plasmas.
本文较系统地用WKB方法和FDTD方法研究了不同等离子体覆盖导体目标的电磁特性。
This paper discusses the stability of internal inertial gravity wave in the heterogeneous stratified atmosphere when basic flow appears to be weak vertical shear by the WKB method.
本文应用WKB方法研究了在弱非均匀层结大气中，当基本气流具有弱垂直切变时，重力惯性内波的稳定性问题。
Effective refractive indices were measured by m-line technique. The refractive indices distribution, diffusive depth and diffusivity coefficients have been calculated using inverse WKB method.
借助于m线技术测量了有效折射率，并利用逆wkb法计算了波导的折射率分布、扩散深度和扩散系数，发现其扩散性质差异。
Effective refractive indices were measured by m-line technique. The refractive indices distribution, diffusive depth and diffusivity coefficients have been calculated using inverse WKB method.
借助于m线技术测量了有效折射率，并利用逆wkb法计算了波导的折射率分布、扩散深度和扩散系数，发现其扩散性质差异。
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