文章先给出了光纤色散与光纤传播常数及等效折射率的关系。
First, the relation between the dispersion of the fiber and the propagation constant and equivalent refractive index is presented.
此外，推导出波导tm、TE模的传输功率、损耗功率、衰减常数、等效阻抗等特征参数的边界元公式。
Furthermore, the formulae of transmitted power, loss power, attenuation constant and equivalent impedance for TM and te modes are deduced.
根据线弹簧界面和具有任意弹性模量的薄界面相之间的等效关系，得到了弹簧常数的表达式。
According to the equivalent condition between the linear spring interface and the thin interphase with arbitrary elastic properties, the exact expressions of the spring constants are obtained.
应用等效网络法分别测量了空气、聚四氟乙烯及微波介质陶瓷材料片状试样的介电常数。
The dielectric constant of air, polytetrafluoroethylene (PTFE) and the microwave dielectric ceramics sheets is measured by the equivalent network method.
根据泡沫分离与化学反应过程在物理行为上的类似性，引入等效的化学反应常数，对实验方法进行了宏观动力学研究。
According to the similarity of physical behavior of foam separation process and chemical reaction process, the equivalent chemical reaction constant is introduced.
通过将多包层光纤等效为阶跃光纤，求等效阶跃光纤的传播常数与等效折射率，求得多包层光纤的色散。
Then, the dispersion of the multi-clad fiber is obtained by solving the propagation constant and the equivalent refractive index of single-clad fiber which is equal to multi-clad fiber.
为了研究微波与化学反应体系的相互作用，关键是对化学反应体系的等效复介电常数进行研究。
The key problem is to obtain the effective permittivity of chemical system when we study the interaction between microwave and chemical reaction.
等效时间常数可以从感应电流自然衰减特性得到，电阻和电感则通过计算被动反馈线圈中涡流损耗和磁场能量中求得。
The equivalent time constants are derived from the decay characteristics of the induced current. The resistance and inductance can be given by calculating the eddy current loss an…
其降阶指把电流环时间常数调整到尽量小，低频信号段可等效为普通比例环节。
The intension of reduce rank is that the time constant of current-ring is regulated to the best of minimum, and low frequency signal is equated to common proportional component.
基于介质圆柱电磁散射理论和等效介质理论，导出了金属柱微粒-电介质复合材料的等效相对介电常数的表达式。
Based on the electromagnetic scattering theory of dielectric wire and effective medium theory, the formula of the effective dielectric constant of metal wire-dielectric composites is derived.
为此把带有波纹的底板和腹板分别等效为正交各向异性平曲板，并通过拉伸和剪切试验得到了其两个方向的等效材料常数。
The web and flange plates with a large number of corrugations are equivalent to orthotropic curve plates and their equivalent material coefficients are obtained by stretching and shearing experiments.
通过求解电容器的等效电容，进一步导出复合材料有效介电常数的计算公式。
By solving the equivalent capacitance of the capacitor, the formulas of effective permittivity are derived.
基于降雨衰减机理，利用雨介质的等效介电常数模型计算了降雨的特征衰减。
Based on the mechanism of rain attenuation, the special attenuation by rain is calculated by the equivalent dielectric permittivity model.
基于三维均匀化方法并结合有限元技术，计算三维蜂窝夹层板的等效弹性常数。
Using the 3-D homogenization method and the finite element technique, we evaluate the effective elastic constants of the 3-D honeycomb sandwich panel.
吸波材料性能的优劣与复合物的等效磁导率与介电常数密切相关。
The performance of RAM is closely related to effective permeability and permittivity of composites.
本文用等效介电常数法计算了镜象波导各模式的归一化截止频率，给出了通用的模式图。
The normalized cut-off frequencies of Epqy and Epqx modes for image waveguide arc investigated by EDC method. A generalized mode chart for image waveguide is given.
计算结果与CST - MWS的模拟结果吻合良好，说明所提出的计算等效相对介电常数的方法和计算色散方程的方法对环板慢波结构是切实可行的。
The results manifest that the dielectric-loading can lower the operating voltage of the ring-plane slow-wave structure. Good accordance was obtained between results by this method and that of CST-MWS.
计算结果与CST - MWS的模拟结果吻合良好，说明所提出的计算等效相对介电常数的方法和计算色散方程的方法对环板慢波结构是切实可行的。
The results manifest that the dielectric-loading can lower the operating voltage of the ring-plane slow-wave structure. Good accordance was obtained between results by this method and that of CST-MWS.
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