介质

According to the equation deduced by the author, the thickness of the strata and the relative sizes of the electromagnetic parameters in the media on the two sides of the bottom interface of the strata can be determined by measuring the frequency of the antinode.

测定波腹频率，就可以根据文中给出的推导方程，计算出地层厚度，以及地层底界面两侧介质电磁参数的相对大小。

The result from the three simulation model continues that two step synthesis method is one effective ray tracing method.Because it can accurately persue the least travel time of ray fast and have very strong antinoise nature, so it can be used to the complex medium tomography analysis.

通过构造的数值模型验证了改进算法，表明该算法是一种有效的射线追踪方法，能快速准确的追踪射线的最小走时数据并且具有很强的抗噪性，可以应用到复杂介质的层析成像中。

It still signifies that polarized-emissioned gain medium is a better candidate to research "antiphase"state.

同时指出了各向异性介质才是研究反相态这一物理现象更合适的对象。

An infinite elastic solid containing a doubly periodic parallelogrammic array of annular cross-section inclusions under antiplane shear is studied.

研究了含双周期分布圆环形截面弹性夹杂的无限大介质在远场均匀反平面应力下的弹性响应。

In this paper,in consideration of air medium inside the hole defects acting on the electric field, a coupled field of antiplane strain problem for the piezoelectric material with an elliptic hole is analyzed with an expression for potential function of complex veriable in Faber series.

考虑椭圆孔内空气介质对电场的作用，用复变函数的Faber级数展开方法，分析了含椭圆孔的压电材料反平面应变问题的耦合场，给出了问题的精确解。

The investigation shows that data of tipper and apparent tipper obviously reflect the inhomogeneity of horizontal direction of medium-electric resistivity, particularly the fault. So the data of frequency range apparent tipper calculated by high-quality four-component observation data can be used in identifying the position, inclination and scale of fault.

研究结果表明：倾子和视倾子资料对介质电阻率水平方向的不均匀性，特别是对断裂反映明显；应用质量较好的四分量观测数据计算出高频段（频率大于1Hz）的视倾子资料，可以用来判断断裂的位置、倾向和规模。

Referring to related newly developed methods abroad,in the paper, the expressions of frequency domain apparent resistivity and its numerical calculating formulae of electromagnetic field of vertical magnetic dipole source for the surface of horizontally layered media have been obtained.

该文参考国外最新发展的方法，求取了水平层状介质表面上垂直磁偶极源电磁场的频域视电阻率表达式及其数值计算公式，并用自编程序计算了几种典型地电断面的视电阻率曲线，以说明这种方法的有效

Firstly, the isotropic difference templates were introduced to approximate the differential in the ADI-FDTD method, and the weighting coefficients of difference terms were determined for implementing isotropic numerical dispersion; Then the permittivity and permeability were adjusted manually to reduce the numerical dispersion error in any directions. Therefore the simulation accuracy and efficiency can be improved effectively for time domain problems with some finite bandwidths.

该方法在ADI-FDTD方法的差分近似微分中引入各向同性差分模板，并通过确定各向同性差分的加权系数来近似实现各向同性，然后人为修正空间的介质参数来减少各个方向上的数值色散误差，因此在模拟一定带宽的时域问题时可有效提高计算精度和计算效率。

In Chapter 2, a method for producing approximate point source responses in laterally varying model is introduced.

第二章给出了作者所发展的计算二维不均匀介质中点源理论地震图的有限差分近似算法。

The adsorption of Au and Au by the PVC nylon 6 resin is different in aqua regia.

在王水介质中，PVC－尼龙6树脂定量吸附Au，而Au基本上不吸附。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。