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 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。
• 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。
• 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 interval parameter perturbation method and the interval parameter back analysis method are studied, and the interval parameter monotony back analysis method is presented.
  研究了区间参数摄动法和区间参数优化反分析法，提出了区间参数单调性优化反分析法。
• 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。
• 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。
• 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 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。
• 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。
• This message caused perturbation in the Middle East Headquarters.
  这则消息在中东总部引起了不安。