Perturbation theory indicates that small perturbation of the coefficients could lead to the big perturbation of the root.
摄动理论显示，对于特征方程系数的小幅度扰动即可导致根的大幅度变化。
Their idea was to introduce a small perturbation into the brain, the neural equivalent of butterfly wings, and ask what would happen to the activity in the circuit.
他们的思想是对大脑类似行蝴蝶翅膀的神经采用一个小的干扰，并询问这一回路中发生的活动。
The asymptotic stability of the rarefaction wave has been established for the impermeable wall problem under small perturbation conditions and non-isothermal conditions.
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 small perturbation method and the finite element method were used to calculate the stiffness and damping coefficients of a gas film with three degrees of freedom for a gas film face seal.
应用微扰方法和有限元法，对端面气膜密封三自由度微扰下，密封气膜的刚度和阻尼系数进行了数值求解。
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.
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。
A small additional perturbation can have a substantial effect.
小小的波动就能产生实质性的影响。
Two sets of inverse formula of velocity perturbation and reflection functions are deduced under the hypothesis of small energy absorption.
在能量吸收比较小的假设下，利用此法可得到两套及演速度扰动函数和反射函数的公式。
In this paper, the small signal port characteristics is established by the "perturbation signal feedback injection method", which lays a foundation of the system stability analysis.
本文在对系统进行适当简化的前提下，采用“扰动信号反馈注入法”建立了系统的小扰动端口特性，为系统的静态稳定性分析奠定了基础。
In this paper, a new kind of nonlinear analytical method which does not depend on small parameters is described and is compared with the perturbation techniques.
本文描述了一种新的、不依赖于小参数的非线性分析方法，并分析、比较了该方法与摄动展开方法的优缺点。
A matrix perturbation method for the calculation of errors in precision electro-magnetic measuring circuits caused by small variation of circuit parameters is described in this paper.
本文提出用矩阵微扰法计算精密电磁测量线路的参数发生微小变化时引起的误差。
The small parameter perturbation approximation is applied quite often in applied mathematics and mechanics.
应用数学与力学经常使用小参数摄动近似。
The perturbation problem of symmetries for constrained Hamiltonian systems under the action of small excitation is studied.
研究小干扰力作用下约束哈密顿系统对称性的摄动问题。
An optimum perturbation method based on small variables is suitable for nonlinear systems.
最佳摄动法是一种基于小参量的系统辨识方法，特别适用于非线性系统。
The second order perturbation solution for the flow of power-law fluid in stillness a helical pipe is obtained with curvature and torsion as small parameter.
以曲率和挠率为小参数得到螺旋管道内幂律流体流动的二阶摄动解。
But if the cone Angle is assumed to be small then a boundary perturbation scheme can be developed. The asymptotic analytical solution of this flow is shown in this paper.
但在小锥角条件下，采用摄动理论的边界摄动方法，我们获得了该流动的渐近分析解。
In the experiments, a small-amplitude sine wave of displacement is modulated to shear loading to study the effects of shear stress perturbation on stick-slip instability.
实验中通过在剪切方向上叠加正弦波状的位移扰动，研究了剪应力扰动对断层粘滑失稳的影响。
By means of the asymptotic solution of singular perturbation problem we proved the uniform convergence of this scheme with respect to the small parameter.
我们利用问题的渐近解证明了差分格式关于小参数的一致收敛性。
Based on the method of small parameters perturbation of 2nd order, the stochastic functional of potential energy for structures with stochastic stiffness under stochastic stimulus is derived.
利用小参数摄动法，建立了随机结构在随机激励下的二阶摄动随机势能泛函。
In this article, the effects of the small magnetic field perturbation on the equilibrium of plasma are discussed (the problem of the static stability of plasma).
本文讨论了外磁场微小的变动对等离子体平衡位形的影响，即等离子体的静态稳定性问题。
Damage tends to be concentrated in a few structural members at the early stage, so the stiffness perturbation matrix tend to be in small rank.
在结构损伤的早期阶段，损伤往往集中发生在少数单元，损伤前后总体刚度矩阵差的秩较小。
Damage tends to be concentrated in a few structural members at the early stage, so the stiffness perturbation matrix tend to be in small rank.
在结构损伤的早期阶段，损伤往往集中发生在少数单元，损伤前后总体刚度矩阵差的秩较小。
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