结果表明，扰动波矢轴向分量的存在引起新的不稳定性。
Our results indicate that the axial component of wavevector of perturbation can lead to a new instability.
本文用数值计算的方法研究流动稳定性问题中小扰动波的传播速度。
In this paper, by using the direct numerical simulation method, the propagation speed of small amplitude disturbances in the problem of hydrodynamic stability is investigated.
基于BBGKY方程，采用二阶扰动理论探索了可观物理量与扰动波矢的相互关系。
The relationship between physically observable quantities and perturbed wave vector is explored on the basis of BBGKY hierarchy equations and the second order perturbation theory.
这说明锥形液膜的破碎受到两种长短不同的扰动波的共同影响，且在短波的影响下液膜更易破碎。
It is shown that both long and short wavelength waves affect the breakup of the conical sheet, and sheet is easy to breakup under the effect of short wavelength wave.
当波从小扰动源向各个方向均匀传播时，其强度的变化与距离的平方成反比。
When a wave travels uniformly in all directions from a small source, the intensity varies inversely as the square of the distance.
对于大扰动事件，提出了利用电力故障录波系统信息(PFRMS)和SVM的负荷建模。
As for large disturbances, this dissertation used SVM and information of power fault recording and monitoring system (PFRMS) to establish load model.
此外，表面波的形态及其演化还对初始扰动比较敏感。
Moreover, the shape and evolution are sensitive to initial disturbance.
在一定条件下，动力扰动可简化为平面应力波。
The dynamic disturbance can be simplified as plane stress wave under certain conditions.
利用波扰动方程，分析研究了声表面波器件频率-温度敏感性与石英晶体各向异性参数之间的关系。
The temperature sensitivity of the frequency as a function of quartz crystal anisotropy is presented by the perturbation equation due to the temperature change.
利用两流体模型、小扰动原理和线性一阶齐次方程组有解的条件，得到了气液泡状流型下的压力波色散方程。
Using two-flow model, small perturbation theory and solvable conditions of one-order linear equations, a dispersion equation of pressure wave in horizontal air-liquid bubbly flow was proposed.
考虑了弹塑性应力波传播对屈曲的影响，建立了该问题横向扰动方程。
The equation of lateral disturbance used to analyize the problem is developed by taking into account the effect of elastic-plastic stress wave.
讨论了半空间中满足无渗透边界条件的一维黏性可压缩热传导流体的流动，给出了在小扰动和非等温条件下稀疏波的渐进稳定性。
The asymptotic stability of the rarefaction wave has been established for the impermeable wall problem under small perturbation conditions and non-isothermal conditions.
这个扰动作为一个所谓表面波或倏逝波沿着x方向行进。
The disturbances advances in the X - direction as a so - called surface or evanescent wave.
这个扰动作为一个所谓表面波或倏逝波沿着X方向行进。
The disturbances advances in the X-direction as a so-called surface or evanescent wave.
针对采用调频连续波(FMCW)体制的天波超视距雷达的应用场合，提出了一种电离层扰动(慢相径变化)补偿改进算法。
This paper presents an improved arithmetic for extracting and compensating the phase-path variations caused by the ionospheric disturbance in a HF sky-wave OTH radar with FMCW waveform.
在绝热密度扰动(假定初始扰动是绝热的)的方案中，有两种观念特别值得注意：1，宇宙密度波的观念。
Two ideas are worth notice in the adiabatic scenario (assumed that the initial perturbations are adiabatic) : 1. The idea of the cosmic density wave.
对深部矿柱在承受高静载应力时的动力扰动力学模型进行应力波传播力学响应分析，采用FLAC3D有限差分程序对深部开采圆形矿柱进行高应力下动力扰动数值计算。
By using an explicit finite difference program FLAC3D, a model of numerical calculation is established for a deep mining pillar with dynamic disturbance under high stress.
因此，扰动就趋于增强而引起冲击波的形成。
Hence disturbances tend to grow, giving rise to the formation of a shock wave.
利用所构造的复数正交紧支对称小波，分别研究了电网电能质量扰动的检测、定位与分类问题。
From this, detection, location and classification of power quality's disturbances are analyzed respectively, by the symmetry complex compactly-supported orthonormal wavelet constructed.
采用小波软阈值去噪方法对信号噪声进行预处理，很大程度地减小了噪声对扰动检测的干扰。
Wavelet soft-threshold de-noising method was applied to preprocess the noisy signal, and the noise interference in disturbance detection was reduced to a great extent.
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.
本文应用磁弹性波理论，提出伴随地震波传播的同时，地磁场将产生一个扰动。
Based on the theory of magneto-elastic waves, a geomagnetic disturbance accompanying the propagation of seismic waves was studied.
针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。
According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.
利用小波多分辨率分析方法对去噪后的扰动信号进行检测，更精确地提取出了暂态电压扰动信号的特征值。
Wavelet multi-resolution analysis method was used to detect de-noising disturbance signal, character values of the transient voltage disturbance signal were extracted more precisely.
根据系统数据矩阵不存在扰动和存在扰动两种情况，分别给出波达方向的最小二乘估计和总体最小二乘估计。
Under the circumstances of no perturbation and with perturbation in coefficient matrix, both LS and TLS estimators were proposed.
该短波扰动与风场的波动不相匹配，其位相传播特征与重力波相似。
The short wave disturbance did not match the undulation of the wind field, and the characteristics of its phase propagation were similar to those of gravity waves.
本文首次研究了被导电磁波与强扰动随机媒质的相互作用问题。
In this paper, the problem of interaction of guided electromagnetic waves and strong fluctuation random media is studied for the first time.
对于相同的初始扰动振幅，随着波数的增加，低频振荡周期缩短，三波逐渐变得不稳定，三波之间较强的相互作用时间缩短。
For the same initial amplitudes, the periods are becoming short, the three waves are gradually becoming instability, and the time of strong interaction is shorting with increasing of wave Numbers.
结果表明大气中被激发出的长波扰动最初主要是从基本状态的层结不均匀性中得到能量，然后可从波的相互作用中获取能量。
The results show that the excited long wave disturbance could first obtain energy from the stratified heterogeneity of basic state, then from the interactions among non-linear waves.
压力扰动不可能驱使能量释放分布图移至波腹区域以产生持续的纵向波。
A pressure disturbance cannot drive the energy release profile uniformly to the anti-node region to result in a sustained longitudinal wave.
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