perturbations

英 [ˌpɜːtə(ː)ˈbeɪʃənz]

美 [ˌpɜrtərˈbeɪʃənz]

n.  忧虑; 不安; 烦恼; 摄动; 微扰; 小变异
perturbation的复数

化学

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。

双语例句

• The fact is that small density perturbations or departures from perfect homogeneity, are unavoidable in such a medium.
  小的密度扰动或对理想均匀性的偏离在这样的物质中不可避免。
• The question on bifurcation of limit cycles in quadratic conservative perturbations of a quadratic integrable system is discussed.
  研究了一个具有同宿轨的二次可积系统在二次保守扰动下的分支现象。
• Analysis of a three-species predator-prey system with impulsive perturbations and non-monotonic functional response
  具有脉冲扰动和非单调功能反应的三种群捕食系统的分析
• Initial perturbations scheme is one of the important problems in the ensemble prediction.
  初始扰动方案是集合预报研究的核心问题之一。
• Quadratic Stability and Control for Large-scale Interconnected Time-delay Descriptor Systems with Nonlinear Perturbations
  非线性扰动的关联时滞广义大系统的二次稳定与H∞控制
• Due to the effects of perturbations, the distribution of air pollution often presents irregular undulations.
  受近地层局地小扰动的影响，大气污染浓度分布常呈现不规则起伏。
• Adaptive robust stabilization for a class of dynamical systems with delayed state perturbations;
  本文研究一类非线性定常离散系统的鲁棒关联稳定性问题。
• The Bifurcations of Limit Cycles for a Linear System with 9-degree Perturbations;
  一类线性系统在9次扰动下的极限环分支（英文）
• Stage-Structured Predator-Prey Model with Delay and Impulsive Perturbations on Predator
  具有脉冲投放捕食者阶段结构时滞的捕食-食饵模型
• Emissions of light and very low frequency perturbations due to electromagnetic pulse sources
  因电磁脉冲源引起的光辐射和甚低频微扰