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

• 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。
• 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。
• 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。
• 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。
• 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 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。
• 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 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。
• 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。
• 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。