We take sech form ansatz and solve the CNLS equations through variational approach. We obtain the analytical expression of nonlinear coupling term, which is in the lagrangian of CNLS. We apply a potential well model to analyze the interaction properties of self-trapping beams in detail, the results show that the interaction do not change the profile of the beams, two beams keep oscillating around their collective center periodically. The amplitude and period of this oscillation are both determined by initial separation of two beams.
我们采用Sech函数为试探函数，用变分法求解CNLS方程，（1）给出了CNLS方程所对应的拉格朗日中的非线性耦合项的解析表达，（2）利用势阱模型详细分析两自陷光束之间相互作用的特性，结果表明，相互作用没有改变孤子的形态，它们分别在与传播方向垂直的方向上绕它们的公共中心做往复振动，振动幅度及周期都取决于两光束的初始分隔。
Surface Plasmon oscillation is a phenomenon of physical optics, Evanescent Wave produced in the boundary of glass when Total Internal Reflection occur can be used to excitate the free charges at a metal surface to form Surface Plasma Wave which can propagate along a metal-vacuum interface.
表面等离子体共振是一种物理光学现象。利用光在玻璃界面处发生全内反射时的倏逝波，可以引发金属表面的自由电子形成在金属-真空界面传播表面等离子体波。
A powerful tool of dynamical system analysis named normal form method is presented in this dissertation, and then it was used to analyze oscillation phenomena in interconnected power grids. Using nonlinear coordinate transformation of normal forms, a fully described power system can be converted to an equivalent reduced order model, which can still use the conventional modal analysis of small signal stability problems.
论文将动力系统非线性分析的正规形理论应用于互联系统低频振荡分析中，利用正规形方法的非线性坐标变换，将高阶电力系统转化为等价的低阶系统，在保留非线性信息的同时，使其仍然可以使用常规小信号稳定研究的模式分析方法。
The results demonstrated that supersonic airflows will form a low-frequency oscillation in the combustor after the inlet cover is open, and the attenuation of the oscillation is very slow.
计算结果表明，在进气道整流罩打开以后，超声速气流会在燃烧室通道内形成振幅衰减较慢的低频剧烈振荡。
The space charge field in the vacuum is decreased under the exponential trend, but the space charge field in the plasma is oscillation form and propagating faraway.
真空中的空间电荷场呈指数衰减趋势，而填充背景等离子体的空间电荷场具有相反的结果。
More specifically, the effects of the coolant flow rate oscillation in the form of nearly triangular wave on the transient flow boiling will be examined in detail.
值得注意的是冷却液流量随时间振荡，是如何影响暂态流动沸腾将会被详细的探讨。
Obvious electrochemical oscillations in Daniell cell, including electromotive force oscillation and its electrode reaction oscillation, were found as adding emulsion to form electrolytic emulsion.
将大量乳液加入丹尼尔电池中，形成电解质乳状液，由此产生了明显的电化学振荡，包括电池电动势振荡和电极反应的振荡。
Using operational amplifiers with their external components to form a gyrator, it is possible to simulate a large value inductor with a very high Q factor and to realize ultra-low frequency oscillation.
将运算放大器及其外接元件组成回转器，就能够模拟一只Q值极高的大电感，从而实现超低频振荡。
In receiving mode, through controlling DDS, it produces the local oscillation signal needed by down frequency conversion of the receiving signal. Then the DBF is used to form the receiving beam.
在接收模式下，则利用DDS技术产生接收信号下变频所必需的本振信号，然后采用DBF技术形成接收波束。
The influence on the position of vortex breakdown by spiral forcing harmonic oscillation on form
螺旋形强制谐波振荡对涡破碎位置的影响
The dynamical model and the oscillation-rotation model of particle are derived from the dynamical mechanism of spontaneously break symmetry, and its simplified form is a harmonic oscillator model.
简述了已知的粒子质量公式，由动力学的对称性自发破缺机制导出粒子的动力学模型和振动-转动模型，其简化形式是谐振子模型。
Competition of different frequency oscillation often yield resonance in some positions of the human body so as to form oscillatory network and strange point with the electromagnetic and chemical oscillation circulating dominant position in the body, which is possibly meridians and acupoints with regulative actions.
不同的振荡之间相互竞争，往往会在机体的某些部位引发共振，从而形成具有电磁和化学振荡传输优势的振荡网络和奇点，它可能就是最具调整效果的经络和腧穴。
Based on the character of off-axis and multi-pass amplification systems, the possibilities are analyzed that some part of the line could form optical oscillator and occur self-excitation oscillation.
根据离轴多程放大系统的光路特点，对产生谐振腔最可能的光路部分进行了自激振荡形成条件的分析，根据分析结果并结合实际情况采取了一些抑制自激振荡的措施。
A novel magnetically insulated transmission line oscillator using a vircator as load is put forward for the first time in the present dissertation. The special feature of such vircator-load MILO is that, besides generating the self insulating magnetic field in the slow wave structure, the load current is used to form virtual cathode oscillation in the vircator load and gives out additional microwave radiation making the V-MILO a higher efficiency microwave source.
在全面调研和认真分析磁绝缘线振荡器的基础上，结合虚阴极振荡器的特点，提出了一种以虚阴极振荡器为负载的新型MILO，可使MILO负载电流在提供自绝缘磁场的同时被充分利用，形成虚阴极振荡产生微波，从而提高器件的效率。
The method of the conventional normal form in solving the weakly nonlinear oscillation system has been successfully developed, but it may not be available under the strongly nonlinear circumstances.
传统规范形理论求解弱非线性振动系统渐近解的方法已经很成熟，而对于强非线性振动系统，传统规范形理论并不适用。
We use the state transition table to form oscillation rings and generate patterns by searching valid states through traversing input sequences.
而藉由输入序列来寻找有效之状态，我们使用状态转换表来建构振荡环及产生图样。
We design one oscillation propulsion system that makes the fins oscillating in the sine wave form, and then
在实验项目里，主要研究三种鱼鳍几何形状在不同振幅及不同摆角下的推进特性。
Its forcing is exactly known, so attractive for many interesting of scholar's. The lunar atmospheric tide concentrates mainly on the lower, denser regions of the atmosphere and then propagates upward to the upper atmosphere in the form of various tidal oscillation modes.
大气太阴潮汐主要由月球引潮力引起，其源比较清楚，因而引起了学者们很大兴趣。大气太阴潮汐主要作用于密度高的低层大气，并以各种潮汐振荡模上传到高层大气。
Heteroclinic bifurcation of the strongly nonlinear oscillation system by the normal form method
规范形方法判断一类强非线性振动系统的异宿分岔
The regularity of the change of the unstable oscillation wave form and the structure of the power spectrum were analysed.
计算并绘出了非稳区域边界，分析了非稳振荡波形变化规律及其模结构。