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

• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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；
• 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。
• 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。