推导出自由单层板频散方程的矩阵表达形式。
Matrix expression for dispersion equation of a single plate was derived.
文章认为，在时间伸展变换的情况下，频散方程将不是一个圆，而是一个椭圆。
It is deemed that with the variation of time extension, the dispersion equation should be an ellipse rather than a circle.
对于简正波，运用高效数值方法解频散方程，提高了简正波的计算精确和速度。
To obtain accurate normal modes quickly, the frequency dispersion equation was solved by an efficient numerical algorithm.
通过分析不同的应力和位移边界条件得到了三种不同双层管结构中扭转模态的频散方程。
Dispersion equations of torsional modes in three different two-layer pipes are obtained by means of analyzing different stress and displacement boundary conditions of these structures.
从壳体基本运动方程出发，导出了弹性介质中的充液管道在轴对称运动下声振耦合系统的频散方程。
The dispersion equation of structure acoustic coupling system for fluid filled pipes surrounded by elastic media under axisymmetric motion was derived from shell dynamic equation.
基于涂层结构中表面波的频散方程，提出了一种从实测的相速度频散数据计算材料参数的反演方法。
Based on the dispersive equation of surface waves in the coated materials, an inverse method was proposed for calculating the coating properties from the measured dispersive data of phase velocities.
对瑞雷波频散方程的数值计算表明，层状介质中瑞雷波往往存在多种模式，多模频散曲线有什么特征。
The numerical computation of Rayleigh wave found there are many modes in dispersion curve in the bedding media.
本文推导了计及重力效应运动媒质中的次声波动方程和用速度的散度表示的分层大气模型下的频散方程；
The equation of infrasonic wave taking into account the gravitational effect in moving media is derived, with multi-layer atmospheric model.
提出自结合方法，导出波传播的限定条件，在找到相应的正交序列后，完全得到弹性波导系统中解析形式的频散方程、群速度方程和稳态响应。
After finding the orthogonal sets corresponding to the guided-wave restriction condition, the analytic dispersive equation, group velocity equation and steady response are obtained simultaneously.
波动方程高阶差分法具有精度高、数值频散小的优点。
The high-order difference method of wave equation has the advantages of high accuracy and small numerical dispersion.
本文使用高阶方程深度偏移方法，并且在计算中采用了一种与差分运算等价的时移法解决了计算中出现的频散和振幅失真问题。
The depth migration with higher-order approximation by time-shift algorithm eliminates the frequency dispersion and amplitude distortion in the calculation process.
G -N方程比浅水方程增加一个非线性的频散项，以补充有限水深对浅水船波的影响。
This paper employs Green Naghdi (g n) equation to study ship waves in shallow water of finite depth.
G -N方程比浅水方程增加一个非线性的频散项，以补充有限水深对浅水船波的影响。
This paper employs Green Naghdi (g n) equation to study ship waves in shallow water of finite depth.
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