弱非线性和孤波。
它是含有刚度非线性和阻尼非线性的弱非线性系统。
This system is of a small nonlinearity containing stiff nonlinear and damper nonlinear one.
研究一类弱非线性内波导致的声信号幅度起伏机理。
Thirdly, the fluctuation of sound signal amplitude caused by one kind of non-linear internal waves is analyzed.
因接触区的边界预先不能定出，故这组方程为弱非线性方程。
Because the boundary of contact region cannot be determined in advance, these equations are weak nonlinear ones.
首先，用多尺度法导出弱非线性强迫激励系统的频率响应函数。
Firstly, by means of multiple scale method the frequency response function of weakly nonlinear vibration system is derived.
第二个实例是自引力介质中弱非线性波的渐近周期解及色散关系。
The second example is the asymptotic periodic solution and the dispersion relation of weakly non-linear waves in a self-gravitating medium.
本文使用弱非线性、非轴对称扰功波的孤立波模型模拟螺旋型涡破裂。
The solitary wave theory of the weakly nonlinear, non-axisymmetric disturbances is used to model the spiral vortex breakdown.
本文提出了一种基本适用于弱非线性电阻电路在软故障情况下的故障分析方法。
This paper presents a modified method for multiple-faults diagnosis of resistance circuits with weakly nonlinear element.
采用非线性抛物化稳定性方程（PSE）研究了非平行边界层的弱非线性稳定性。
The weak nonlinear instability of a nonparallel boundary layer is studied by nonlinear parabolized stability equations(PSE).
传统的设计和分析方法都是建立在弱非线性基础上，对于强非线性的微波电路不再适用。
Traditional design and analysis methods of these circuits are based on circuits in weak nonlinear circumstance. But for strong nonlinear circuits, these methods are not suitable.
本文研究弱非线性动态系统“黑箱”建模的理论和方法，并简要给出根据此方法建模的结果。
The modeling theory and method of black box 'for weakly dynamic nonlinear systems are studied and the modeling results for the practical systems are also presented in the paper.
本文应用多重尺度约化微扰方法研究了充满流体的圆形弹性管壁上应力波的弱非线性调制问题。
The reductive perturbation method of multiple-scales is used to investigate the weak nonlinear modulation of the stress wave on the wall of a fluid-filled elastic circular tube.
本文最后用该显式结合含弱非线性效应的缓坡方程，对复式浅滩地形上的波浪折射绕射进行了计算。
Making use of the explicit nonlinear formulation derived in this paper and the mild slope equation with weak non-linearity calculations are conducted for wave transformation in the compound shoals.
本研究将“边缘层模型”应用于两层流体系统中弱非线性内波在台阶地形上的反射和透射问题的研究。
The edge-layer theory is applied to study the refection and transmission of the weakly nonlinear internal wave over a step in a two-layer fluid system.
内摩擦角和与水分状态相关的饱和度的关系是强非线性的，和与密度状态相关的饱和度的关系是弱非线性的。
Internal friction Angle has a strong nonlinear relation with moisture state related saturation and a weak nonlinear relation with density state related saturation respectively.
针对AMT离合器接合位置控制系统具有的时滞弱非线性特性，采用DMC-PID串级预测控制算法应用于该系统。
In view of the weak nonlinearity and time-delay characteristics of AMT clutch engagement position control system, DMC-PID cascade predictive control algorithm is applied to the system.
将其应用于含弱非线性效应的缓坡方程进行数值验证，结果表明，采用新的非线性弥散关系得到的计算结果与实测结果更为吻合。
The results show that the model using the new dispersion relation can predict the wave transformation over the complicated bathymetry quite well.
论文第二章研究了等离子体中横向扰动下的(3 +1)维弱非线性离子声波，得到了描述离子声孤波的(3 + 1)维kp方程。
In chapter two, the (3 + 1) dimensional weakly nonlinear ion acoustic wave at higher order transverse perturbations in plasma was discussed and described by the Kadomtsev-Petviashvili (KP) equation.
但气动系统由于其固有的强非线性和低刚度的弱品质，使得其控制性能和效果不太理想。
But the control performance of the pneumatic system is not very good because of its inherent non-linearity and low-stiffness.
在非线性偏微分方程中，根据弱可压缩液体的假设，忽略二次梯度项，在试井较长时间内将产生误差。
According to the assumption of slightly compressible fluid, neglected the quadratic gradient term in nonlinear partial differential equation is usually lead to error.
并采用一非线性微分控制消弱了系统的抖振现象。
A nonlinear derivative control is introduced to avoid system chattering.
根据弱相互作用理论，本文建立了损耗大气中极性重力波的非线性相互作用方程。
A set of the interaction equations of inertial gravity waves in a dissipative atmosphere on the basis of the weak nonlinear theory is derived.
提出了新的弱正则伪光滑非线性互补(ncp)函数，该函数具有良好的性质。
In this paper, we present a new nonlinear complementarity (NCP) function which is piecewise linear-rational, regular pseudo-smooth and has nice properties.
研究了含弱阻尼和源项的非线性波方程初边值问题。
The initial boundary value problem of the nonlinear wave equation with the weak damping term and a source term was studied.
研究结果为建立精确描述辐射噪声信号的非线性模型、为水下弱目标信号探测和识别提供一定的理论依据。
The results given in this paper, could provide novel theoretical foundation for the nonlinear character description of the ship noise, as well as for the latter detection and recognition.
讨论非线性系统弱能控性与弱能观性计算机代数的分析方法。
A computer algebra analysis method of weak controllability and weak observability for nonlinear systems is discussed.
研究了非线性系统特征，构建实用于检测强噪声背景下弱信号的特征信息的自适应随机共振算法。
The study of characteristics of the nonlinear system. Realization of the adaptive SR algorithm of detecting the characteristic information of practical weak signals overwhelmed in strong noise.
研究了非线性弱最小相位系统的状态反馈全局镇定问题 。
The unstable zeros of a non minimum phase system are difficult problems for feedforward controller design.
第三章，研究了强激光在等离子体中传输的弱相对论性非线性效应。
Chapter 3: The effects of weakly relativistic nonlinearity of intense laser light propagating in plasmas is analyzed.
这种线性化近似模型要满足两个前提方能解算出足够精度的待估参数：第一，非线性函数模型的非线性强度要足够弱；
To obtain enough accuracy parameters to be estimated, this linear model must meet two preconditions:First, the nonlinear strength of nonlinear models is enough weak;
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