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

• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。