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When making usual assumption of a horizontally-layered medium during inversion, the lateral variation of S-wave velocity will be falsely recognized as the vertical variation, hence introducing artifacts in 2-D S-wave velocity imaging.

本文将藉由有限差分法之数值模拟说明，在具有侧向变化之地层，其於空间上有非稳态之性质，并不符合一维反算之假设。

When the thickness of dielectric layer is not small,because of the addition by the lateral wave and surface wave, the total field will appear the interference.

当介质层较厚时，由于表面波与侧面波相加的结果，总场将发生明显的干涉现象。

This paper improves the design of lattice gas wave model, points out and corrects the mistakes in PLS model. The realization of wave field simulation for complex geological model by lattice solid automata makes the numerical appproach practicable.

与以往的工作相比较，本文发展了现有的格子气波动建模研究，实现了用格子气自动机对实际复杂地质模型中波场的数值模拟，使这种基于离散化波场描述的波场模拟方法实用化。

It is based on the interaction of stress wave in medium and the law of reflection and penetration when stress wave encounters an interface of dissimilar medium or an unequal section.

本文利用工程中可实际运用的一维线性应力波理论，以应力波在介质中的相互作用及其在不同介质界面和不等截面上的反射和透射机理为基础，通过建立合理的由不同材料组成的力学模型，详细探讨了在炸药爆轰这一极其短暂的过程中，主要载荷参数、结构尺寸参数和材料参数等诸多制约因素对子母弹开仓过程和应力波传播的影响规律。

The essential assumption of the wave theory of light is that different wave-lengths correspond to different colours.

光的波动说的主要假定是：各自的色有各自的波长。

Every known wave spreads with some definite velocity, and so should a wave of light.

每个人都知道波是以某种确定的速度传播的，光波当然也是这样。

The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations.

应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法，将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质，给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。

A FDTD program was written and the electromagnetic fields for various polarized incident beams are calculated and the polarization states of the diffractive waves are extracted. The relation between the polarization state of the diffraction wave and the grating balzed angle and polarization angle for the linearly polarized incident wave is analyzed; In the spectral range of 1530 ~ 1570nm, the polarization dispersion is studied for the linearly and circularly polarized incident beam.

用时域有限差分程序计算出任意偏振方向线偏光经过闪耀光栅衍射后的电磁场分布，提取衍射波的S偏振和P偏振分量，分析它们与光栅闪耀角和入射光波偏振角的关系；分析在1530 -1570nm光谱范围内，入射光波为线偏振波和园偏振波时，衍射光波的偏振色散特性与光栅闪耀角的关系。

For different economic systems, the span of a long wave are likely different, and the expectancy period of a long wave is about 50 year.

这种现象是由经济系统的一种内在的作用力所导致的。

Based on the understructure of the theory of economic long wave we had, this paper brought forward believable concept about the economic long wave.

本文在对经济长波理论总结的基础上，给出了一个令人信服的经济长波概念。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。