perturbation

noun

1. 忧虑；不安；烦恼
   the state of feeling anxious about sth that has happened
2. 摄动；微扰；小变异
   a small change in the quality, behaviour or movement of sth
   1. temperature perturbations
      温度的些微变化

1. N-VAR （尤指不常出现的）小变化
   A perturbation is a small change in the movement, quality, or behaviour of something, especially an unusual change.
   1. ...perturbations in Jupiter's gravitational field.
      木星重力场的微小变化
2. N-UNCOUNT （某事引起的）忧虑，不安，烦恼
   Perturbation is worry caused by some event.
   1. This message caused perturbation in the Middle East Headquarters.
      这则消息在中东总部引起了不安。

1. This message caused perturbation in the Middle East Headquarters.
   这则消息在中东总部引起了不安。
2. When crack expanding problem is studied, a high efficiency semi-analytical matrix perturbation method is put forward.
   对于裂纹扩展问题，提出了一种高效的半解析矩阵摄动法。
3. The interval parameter perturbation method and the interval parameter back analysis method are studied, and the interval parameter monotony back analysis method is presented.
   研究了区间参数摄动法和区间参数优化反分析法，提出了区间参数单调性优化反分析法。
4. The perturbation effect of the earths magnetic field on the orbital elements of a charged satellite is further studied.
   研究了地球磁场对带电的非赤道卫星的轨道根数的摄动影响。
5. From the perturbation equation of the shaker stability, the conditions of self synchronous stable running are derived.
   利用振动筛的稳定性扰动方程得到了同步稳定运转条件。
6. This paper presents an iterative method for separating singular perturbation control systems.
   文章提供了一种奇异摄动控制系统的迭代分解方法。
7. J2 perturbation makes the relative orbit drift in the in-track direction, nutation or procession.
   J2摄动对相对轨道的影响分为相对轨道构形的漂移、相对轨道平面的章动和进动。
8. Forward and inversion formulae are derived for the weakly anisotropic ( WA) media by using the perturbation theory.
   利用微扰理论推导了弱各向异性（WA）介质参数正反演计算的基本公式；
9. Perturbation analysis of free capillary-gravity surface-waves in a circular cylindrical basin is developed.
   对圆柱形容器中的自由毛细重力表面波进行了摄动分析。
10. He has researched in computer simulation for laser fusion and numerical methods for singular perturbation problem.
    曾从事激光核聚变的计算机模拟研究和奇异摄动问题的数值解法研究。
11. The quaternion matrix singular value perturbation theorem is generalized and these results are also new one for complex matrix.
    本文对四元数体上矩阵奇异值摄动定理给出了推广，且这些结果对复矩阵也是新的。
12. In the regular solution problem of the perturbation equation, the solution of convergence order is important.
    在扰动方程的正则化求解问题中，解的收敛性估计是十分重要的。
13. By these equations, the perturbation of linear high-order dispersion in the fiber is calculated.
    在此基础上，计算了色散缓变光纤中的线性高阶色散微扰。
14. The system under consideration involves state time delay, nonlinear perturbation and parameter uncertainties.
    系统包含状态时滞，非线性扰动和参数不确定性。
15. Some new absolute and relative perturbation bounds of matrix are obtained.
    给出了矩阵特征值加法扰动的新的绝对扰动界和相对扰动界。
16. The coupling between the transverse velocity and electromagnetic perturbation is considered.
    考虑了横向扰动速度与电磁场扰动的耦合。
17. The problem of robust quadratic optimal control for uncertain linear systems with Square-integral perturbation is discussed.
    在假定扰动为平方可积的条件下，讨论了不确定线性系统二次指标下的最优控制问题。
18. The equations defining the zero-order perturbation simply govern the static solution.
    定义零级微扰的方程简单地决定了静态解。
19. This paper introduces the concept of minimal perturbation efficient solution in minimal perturbation constraints programming.
    文中引进了极小扰动约束规划的极小扰动有效解概念。
20. A precision analytical equation to relative motion of formation flying satellites for J2 perturbation is presented.
    给出了一种描述J2摄动情况下编队飞行卫星相对运动的精确解析模型。
21. A sliding mode perturbation observer ( SPO) was designed for linearization of robot manipulators.
    为机械手线性化和随动控制设计了一种滑动模态扰动观测器。
22. In this paper, the logarithmic perturbation scheme for the central potential field is investigated.
    对中心势场的对数微扰论方法作了进一步探讨。
23. Then, the perturbation problems of the mixed variational-like inequalities problems are studied.
    接着研究了混合似变分不等式问题的扰动问题。
24. The solution of eigenproblem of slightly damped gyro-systems by the direct perturbation method in configuration space;
    导出了在位形空间中，求解对应无阻尼问题有等导重特征值的弱阻尼陀螺特征值问题的直接摄动法。
25. And we apply the results of the structured perturbation bounds to the analysis for eigenvalue clustering of interval systems.
    利用结构扰动结果分析了线性连续区间系统的特征值的分布情况。
26. A mutual interference stage-structured predator-prey model is considered with time delay and impulsive perturbation on predators.
    研究了一个捕食者具连续收获与食饵具脉冲存放的阶段结构时滞捕食-食饵模型。
27. We must seek two main approximation methods of solution, the variation method and perturbation theory.
    我们必须寻求两个主要的近似解法、变分法和微扰法。
28. By using the transformation and the perturbation method, the nonlinear displacement equations are linearized, and the approximate boundary value problems are obtained.
    利用变换和摄动法将非线性位移方程线性化，得到了近似边值问题。
29. The paper put forward a method based on resonant cavity perturbation principle to measure the hydrogen wetness in generator.
    针对目前测量发电机氢气湿度方法和仪器的不足，提出了采用谐振腔微扰测量氢气湿度的新方法。
30. A simplified derivation of superconvergent perturbation for quantum system by means of unitary transformation directly are given.
    直接用酉变换给出量子系统超收敛微扰的简化推导。

noun

1. the act of causing disorder

   Synonym:    disruption

2. a disposition that is confused or nervous and upset

   Synonym:    fluster

3. activity that is a malfunction, intrusion, or interruption
   1. the term `distress' connotes some degree of perturbation and emotional upset
   2. he looked around for the source of the disturbance
   3. there was a disturbance of neural function

   Synonym:    disturbance

4. (physics) a secondary influence on a system that causes it to deviate slightly

5. an unhappy and worried mental state
   1. there was too much anger and disturbance
   2. she didn't realize the upset she caused me

   Synonym:    disturbanceupset