Dispersion and attenuation characteristics of stress waves were studied by means of the automatic data collection and FFT technique.
本文采用自动数据采集及FFT技术研究应力波的弥散与衰减特性。
This paper gives and analyses a general expression of the dispersion relation of one-dimensional lattice waves in simple harmonic approximation.
给出了在简谐近似下，一维格波色散关系的一般表达式，并对其结果进行了分析。
By making use of the Vlasov distribution theory and the three dimensional wave equation of waveguide modes, the dispersion relation of scattered waves in Compton region is deduced.
利用电子束的弗拉索夫分布函数理论和三维波导模的波动方程求得在康普顿区域中的散射波色散关系。
The general dispersion relation of the linear waves and its reduced form in certain particular eases are obtained.
导出了非均匀等离子体中线性波的色散方程，并在一些特殊情况下进行了讨论。
In all the above cases, the utility for transport of terahertz pulses is limited by the high loss, or by the group velocity dispersion of the guided waves.
在上所述的情况中，太赫兹脉冲的有效传输受限于高损耗，或导波的群速度色散。
Finally, the numerical results are given for the dispersion relation of cyclotron waves, the criterion for this instability and the optimum value for generating it has been obtained.
最后对回旋波色散关系进行了数值计算，得到了不稳定性判据和引起不稳定性的最佳值。
The power-dependent complex dispersion relations for TE and TM waves in a lossy nonlinear guiding system with a wide range of absorption coefficients are simulated and analyzed.
模拟和分析了很宽吸收系数范围内非线性有损耗波导系统TE和TM波与功率有关的色散关系。
The second example is the asymptotic periodic solution and the dispersion relation of weakly non-linear waves in a self-gravitating medium.
第二个实例是自引力介质中弱非线性波的渐近周期解及色散关系。
The effects of geometrical dispersion and the orthogonalities of all wave modes for torsional waves are discussed.
讨论了扭转波的几何弥散效应及其诸模态的正交特性。
The mechanism of zigzag dispersion curves in the Rayleigh wave exploration is theoretically analyzed. The propagation characteristics and interrelation of the guided waves are studied thoroughly.
对瑞利波勘探中“之”字形频散曲线形成的物理机理进行了理论分析，研究了诸波模的传播特性及相互关系。
Our theoretical analysis produces the dispersion curves of longitudinal modes of ultrasonic guided waves in liquid-filled pipes with viscoelastic coatings.
理论分析得到了带粘弹性包覆层充液管道中纵向模态的频散曲线。
When the third order dispersion effect exists, the more time delay difference is produced and the dispersion waves are produced at both the front and back edge of the pulse.
当只有三阶色散时，除了产生较大时延差外，还会在两个偏振脉冲的前后沿产生较大的色散波。
The dispersion behaviour of free waves is investigated.
分析了耦合波的传播特点。
It is showed by theoretical study and tests that existing fluid in porous medium and its movements are main reasons of dispersion and attenuation of elastic waves.
理论研究和实验表明，多孔隙介质中流体的存在及其运动是弹性波频散和衰减的主要原因。
The general dispersion relation of electromagnetic waves in one-dimensional plasma photonic crystals is deduced and analyzed, and the dispersion curves with diverse parameters are shown in this paper.
推导并分析了电磁波在一维等离子体光子晶体中的一般色散关系，给出了不同参数下的色散关系曲线。
Dispersion results of the structural vibration waves of higher order circumferential modes in cylindrical shells are calculated, and corresponding dispersion curves are obtained.
研究了圆柱壳中较高阶周向模态结构振动波的频散特性，得到了相应的频散曲线。
The dispersion relations for waves on liquid film surfaces were proved and thickness of liquid film was measured by laser diffraction.
利用激光衍射法验证了液体薄膜的色散关系，并应用于液体薄膜厚度的测量。
When the frequencies of the sine waves increase, the frequency dispersion of the hysteresis loops of the rocks is strengthened. This effect is also intensified with the saturation fluids.
随着正弦波频率增加岩石的滞回圈频散效应增强，饱和液体加强了这种频散作用。
High frequency vibrations did occur early in the microseism, and then the frequency was attenuated because of the damping of rock but not by the frequency dispersion of surface waves.
微地震过程中，先产生频率较高的振动，由于岩体阻尼而非面波频散引起振动频率衰减。
The dispersion relation and Landau damping of electron plasma waves in the quantum plasma are derived by kinetic theory.
研究发现量子效应只对纵波模式，即电子等离子体波的色散关系有修正，对横向电磁波的色散关系没有影响。
Exact dispersion relations for TM waves guided by thin dielectric films covered on one or two sides media of intensity-dependent refractive indexes have been derived.
对于介质薄膜波导的一边或两边复盖有介电常数与光强成正比的非线性介质的三种不同结构，本文导出了三层非线性平面光波导TM波的精确色散关系。
The group velocity dispersion curves of Bayleigh waves through most of the Qing-hai-Xizang Plateau are obtained, using the single-station and multiple-filtering process.
本文用单台多重滤波方法测定了经过青藏高原地区瑞利波群速度频散曲线。
The effect of bulk single uniaxial anisotropy on dispersion relations and resonant spectra of spin waves in bilayer films with antiferromagnetic coupling are investigated.
研究了具有各向异性的双层磁性薄膜中自旋波的本征值问题 ，重点讨论了磁各向异性对自旋波波形的影响 。
The effect of bulk single uniaxial anisotropy on dispersion relations and resonant spectra of spin waves in bilayer films with antiferromagnetic coupling are investigated.
研究了具有各向异性的双层磁性薄膜中自旋波的本征值问题 ，重点讨论了磁各向异性对自旋波波形的影响 。
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