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

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