perturbation

英 [ˌpɜːtəˈbeɪʃn]

美 [ˌpɜːrtərˈbeɪʃn]

n.  忧虑; 不安; 烦恼; 摄动; 微扰; 小变异

复数：perturbations　

化学

BNC.24447 / COCA.19948

牛津词典

noun

• 忧虑；不安；烦恼
  the state of feeling anxious about sth that has happened
• 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

柯林斯词典

• N-VAR （尤指不常出现的）小变化
  Aperturbationis 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
• N-UNCOUNT （某事引起的）忧虑，不安，烦恼
  Perturbationis 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。

英英释义

noun

• the act of causing disorder
  Synonym:disruption
• a disposition that is confused or nervous and upset
  Synonym:fluster
• 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
• (physics) a secondary influence on a system that causes it to deviate slightly
• 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

双语例句

• 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。
• 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。
• 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。
• 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。
• 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；
• This message caused perturbation in the Middle East Headquarters.
  这则消息在中东总部引起了不安。
• 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。
• 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。
• 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。
• 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。