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A new method is suggested to solve the problem of nonstationary random responses of elastic-viscoelastic composite structures. The correlation characteristics of responses under uniformly modulated or ununiformly modulated random excitations are obtained.

提出了演变随机激励下弹性-粘弹性复合结构非平稳随机响应特性的一种分析方法，分别讨论了均匀调制和非均匀调制两种情况下粘弹复合结构系统随机响应的相关特性。

In addition, this function was constrained by sum-rules to assure the accuracy and examined to confirm critical-point energies in the interband transitions and plasmon energies in the collective excitations.

除此之外，建立介电函式时也考虑总和率的限制来确保精确性，并检验在能带跃迁关键点之能量转移及集体激发之电浆子能量以确认无误。

The effects of damping,detuning, bandwidth and magnitudes of deterministic and random excitations were analyzed.

用多尺度法分离了系统的快变项，给出了系统响应的振幅和相位角满足的方程。

In Chapter Two, we introduce the Dirac Fermion as the low energy excitations of the graphene, based on the field theory. We then discuss two-dimensional honeycomb lattice in the nearest-neighbor tight-binding model.

在第二章里，我们研究最近邻紧束缚模型下的二维蜂窝结构的电子态，然后讨论对应的场论模型，即一维Dirac Fermions 模型，最后引出有效质量方程。

We have studied the high-lying Rydbergstates〓and〓of NO molecule by using the meththodsof two-photon and two-step excitations.

本文利用激光双光子激发和两步激发的方法研究了NO分子的高里德伯态〓和〓等，获得了一些新的结果。

Now,more and more experiments have indicated that the primary excitations in luminescentpolymers are the interchain excitons,so it is not sufficient to only study the single chainof the polymer and the interchain coupling must be considered.

对于实验中更为可能的反平行情形，当激子中的电子和空穴不在一条链上时倾向于分开一段距离，这与实验工作者提出的&空间非直接激子&的概念相吻合。

Our investigation has shown that:ⅰ there was an interference effect between the incident and reflected matter waves as all the atoms in BECs were coherent;ⅱ considering the rotation of a vortex, the nonuniform velocity distribution along the surface would play an important role in the quantum reflection process. For example, they would change the characteristics of the interference fringes between the incident and reflected matter waves;ⅲ the reflected vortex became unstable for sufficiently low incident velocity or strong interaction. This sort of instability physically originated from dynamics excitations induced by the atomic interaction in the quantum reflection process.

我们的研究表明：ⅰ由于相干性质的存在，在涡旋与固体表面相互作用的过程中，被固体表面反射回去的部分与正在入射的部分在空间叠加后一定会产生清晰的干涉条纹；ⅱ由于各向异性的速度分布，涡旋的反射率也呈各向异性，因此反射回来的部分与入射部分形成的干涉条纹宽度以及疏密程度与入射速度以及速度各向异性的程度有关；ⅲ由于玻色凝聚体中原子间相互作用的存在，反射过程中凝聚体会产生激发，破坏涡旋的结构，使得反射后的涡旋不再是中心对称。

It is pointed out that the stable region minishes while the excitations increase or the damping coefficient d_(33) decrease.

通过分析比较指出随着随机激励强度的增加或随着阻尼系数d_(33)的减少，稳定域减小。

In this paper,based on the theory of power flow and energy distribution be-tween non-conservat ively co upled os cillators under correlated excit at ions, the equations ofenergy balance for the oscillators are derived and statistical energy analysis theory for non-conservatively coupled systems under correlated excitations is developed.

目前相关激励下的统计能量关系实质是在比例相关或互谱密度为实数的相关激励下获得的，从分析普通相关激励下的功率流入手、给出相关激励下保守耦合系统及非保守耦合系统统计能量关系的普遍形式，实例表明：文中的分析和结论是正确的。

Strategy for designing optimal bounded control to minimize the response of quasi partially-integrable Hamiltonian systems with stochastic excitations is proposed based on the stochastic averaging method for quasi partially-integrable Hamiltonian systems and the stochastic dynamical programming principle.

本文提出了一种基于拟部分可积Hamilton系统随机平均法和随机动态规划原理的最优有界控制策略。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。