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 sliding mode perturbation observer ( SPO) was designed for linearization of robot manipulators.
为机械手线性化和随动控制设计了一种滑动模态扰动观测器。
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。
This message caused perturbation in the Middle East Headquarters.
这则消息在中东总部引起了不安。
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。
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。
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。
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。
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。
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。
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。