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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
      1. 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
        1. a disposition that is confused or nervous and upset
            Synonym:fluster
          1. 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
          2. (physics) a secondary influence on a system that causes it to deviate slightly
            1. 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

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