The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method.
时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组，实现对室内声场中低频段的模拟计算。
The effect of the spatial inhomogeneity of TEM mode on the electron beam-TEM wave field interaction has been discussed with the dynamic thcory.
电磁波与电子注的互作用不仅与电子注的特性有关，也与波场的极化、空间特性紧密相关。
The neutral stability curves and the character parameters are given, including the temporal and spatial growth rate, the critical wave number, the maximum wave number and the wave celerity.
获取表征液膜稳定特征的中性稳定性曲线、扰动的时间和空间增长率、临界波数、最大波数、波速的变化趋势；
The author has found the spatial distribution of seismic wave parameters can determine the place of predicting earthquake, and it is useful to determine the magnitude and time.
研究发现地震波参数空间分布图能有效地确定预测地震的地点，而地震波参数时序与空间图的有机结合将对判定地震震级和发震时间起到积极作用。
As a kind of spatial power combiner, the T-junction waveguide power combiner is very suitable for millimeter-wave.
型波导功率合成器作为一种空间功率合成器件，非常适合用于毫米波频段。
Based on it, the elastic wave velocity spatial distribution around a cased hole in tectonic stress field is studied by applying the velocity-stress formula of equivalent medium model.
在此基础之上，应用等效介质模型的速度—应力关系式，研究了地应力场中套管井周弹性波速的空间分布规律。
High density spatial sampling enhances wave field continuity and the accuracy of various mathematical transforms, which benefits wave field separation.
高密度采集使波场连续性增强，使得各种数学变换的精度提高，有利于不同波场的分离。
The spatial network method is used to calculate the electromagnetic wave scattering characteristic of carbon fiber composite grid structures filled with Absorbing foams.
采用空间回路网法计算得到填充吸波泡沫的碳纤维复合材料格栅结构的电磁散射性能。
Structure response under multiple support excitation which include spatial variety and wave-passage excitation and that including wave-passage effect only are compared.
比较考虑了空间相关性的多点输入与仅考虑行波效应的行波输入法下结构响应的差异。
Thus what is now called the wave equation in one spatial dimension appears for the first time.
这样一来现在称为一维的波动方程就第一次出现了。
Spatial autocorrelation method; Phase velocity dispersion of Rayleigh wave; Circular array; Microtremor survey method.
空间自相关法；瑞雷波相速度频散；圆形排列；微震勘探法。
Waveguide-based spatial power combining project mainly focus on the problem of how to combine power inside the waveguide within the frequency bands of millimeter wave.
波导空间功率合成项目主要研究的问题是如何在波导内部进行毫米波频段空间功率合成放大。
The spatial variation of seismic ground motions is produced primarily by the factors of geometric incoherency effect and wave-passage effect.
导致地震动空间变异性的原因主要包括几何不相干性效应和行波效应。
Then the article discusses forward modeling based on acoustic wave higher difference, then analyzes numerical dispersion including time and spatial dispersion and presents its stability conditions.
接着，简要介绍了基于声波高阶差分的多次波正演模拟方法，分析了这种方法的数值频散问题，包括时间和空间频散，同时给出了它的稳定性条件。
Weak modulated dielectric grating can be equivalent to planar waveguide. When it diffracted high-order spatial sub-wave is coupled with waveguide mode, a guided mode resonance is formed.
弱调制介质光栅可等效为平板波导，经其衍射的高级次子波与波导模式耦合时，形成导模共振。
In this paper, principle analysis shows that tricolor grating has the character of multi-wave superposed in spatial domain and separated in frequency domain.
通过原理分析说明，三色光栅具有的多光谱的空域复用、频域分离的结构特点。
The spatial variability effects of earthquake ground motions including the incoherence, the wave-passage and the local site-response effects are taken into account.
地震动空间变异性综合考虑空间不相干效应、行波效应和局部场地土效应。
Here, we use second-order, temporal - and high-order spatial finite-difference formulations with a staggered grid for discretization of the 3-d elastic wave equations of motion.
采用时间上二阶、空间上高阶近似的交错网格高阶差分公式求解三维弹性波位移-应力方程，并在计算边界处应用基于傍轴近似法得到的三维弹性波方程吸收边界条件。
As a kind of spatial power combiner, the T-junction waveguide power combiner is very suitable for millimeter-wave.
T型波导功率合成器作为一种空间功率合成器件，非常适合用于毫米波频段。
The probability of quasi-square wave spatial solitons is also involved.
提出了准方波形空间光孤子的可能性。
In chapter 4, According to the theory of scalar diffraction, firstly, the equipollence of spatial distribution of the plane-wave interferential field and parallel projective sine grating is discussed.
在第四章，根据标量衍射理论，首先讨论了两平面波干涉场的空间分布与平行投影正弦光栅的等价性。
The average focal mechanism of the swarm area has been inversed from the spatial distribution of the polarities of 2177 P-wave initial motions in the Jaishi swarm.
根据伽师震群地震的2 1 77个P波初动方向记录，计算了伽师震群的平均震源机制解。
The influence of atomic internal state population on its translational motion in a quantized standing wave cavity field with spatial periodic structure is investigated.
基于原子作双光子共振跃迁的原子场缀饰态 ，讨论了驻波腔场中两能级原子的量子化平移运动与原子内态布居间的相互影响。
The influence of atomic internal state population on its translational motion in a quantized standing wave cavity field with spatial periodic structure is investigated.
基于原子作双光子共振跃迁的原子场缀饰态 ，讨论了驻波腔场中两能级原子的量子化平移运动与原子内态布居间的相互影响。
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