层理论的

The dissertation focuses on the phenomenon of wave propagation of piezoelectric periodical composite laminated plate. By using the motion equations and Gauss theorem cooperative with constitutive relations of piezoelectricity, the governing equations can be determined.

本文主要是要探讨压电周期叠层板波传现象，所以由本构方程式配合运动方程式和高斯定理以获得统御方程式，此等方程式在周期结构内具有平移对称关系，所以位移场和电位场的形式可以布拉克理论表示，进而得到代表周期结构行为的统御方程式。

Based on the equation of piezoelectricity and Hamilton principle, a generalized piezoelectric laminated thin shell is analysed and the dynamic equation is derived.

本文从压电本构方程和Hamilton原理出发，对一般的压电层合薄壳进行了力—电耦合分析，推导出了该结构力—电耦合的动力平衡方程，在理论上进行了深入的研究。

This thermal structure is approximate to a hyperbolic tangent profile, which allows theoretically that a mode-2 ISW propagates along the thermocline with permanent form (Benjamin, 1967 and Davis and Acrivos, 1967, etc).

这种密度垂直结构近似於双曲正切函数，理论上可以求得一个在斜温层传递且形状不变的第二斜压模之内孤立波的解析解(Benjamin， 1967 和 Davis and Acrivos， 1967，等人)。

The paper analyses finite element theory which compute final intensity of composite laminate, and modified Newton-Raphson iterative method for stress field computation.

本文分析了计算复合材料层合板最终强度的有限元理论，以及应力场计算的修正 Newton-Raphson 迭代方法。

By utilizing the principle and method of the high-resolution sequence stratigraphy and fully collecting core and well log information, this paper systemmaticaly analyzes genetic facies and divides the depositional system of Carboniferous-Permian coal-bearing strata in Wenshang-Ningyang coalfield.

运用高分辨率层序地层学理论和方法，充分收集和整理钻孔岩心、测井曲线资料，对汶宁煤田的石炭—二叠系含煤地层进行了系统的成因相组合分析和沉积体系划分。

The authors made a group of diagrams which contained the information of minority carrier diffusion lengths in the epitaxial layer and the substrate according to the theoretical analysis.

导出了入射光强1和结光电压V、光吸收系数a的理论关系，其中包含了外延层和衬底少子扩散长度的信息。

The problem of the dynamic interaction between tall building and neighboring multistoried building is expounded and analysed using the method of twodimensional explicit finite element in this paper. Some useful conclusions are obtained.

阐述了高层建筑与相邻多层建筑间的动力相互作用问题，应用波动理论，采用二维显式有限元的方法对这个问题进行了分析。

Then the rigorous solutions for soil layer vibration are analytically derived by virtue of the separation of variables. By means of the orthogonal expansion technique, the coupling system solutions are finally obtained.

在这一背景下，本文考虑了饱和土的三维波动效应，采用解析方法对三维轴对称成层饱和土中完整桩及各类变阻抗桩的纵向耦合振动理论进行系统研究。

The hyperbolic and parabolic travel time of the reflection in layer media are presented in expression of matrix with paraxial ray theory.

利用旁轴射线理论给出了层状介质反射波的双曲线旅行时和抛物线旅行时的矩阵表达式。

This dependence can be explained by using a thermal fluctuation theory. Moreover, calculations show that the thermal stability of the exchange coupling is independent of the permalloy layer thickness.

用热涨落模型对实验结果进行了理论计算分析，分析表明热涨落模型能很好地解释以上结果，分析结果还表明Py层的厚度对交换耦合的热稳定行为没有影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。