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

• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。
• 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。