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

• Angular perturbations tend to increase instead of decrease.
  角扰动倾向于增加而不是减少。
• 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
• Dynamic characteristics of the station keeping point and orbit perturbations are finally discussed.
  最后讨论保持点的动力学特性和轨道摄动对保持点的影响。
• The robust steady-state tracking problem subjected to coprime factor perturbations and unknown external bounded disturbance is addressed.
  研究了存在未知外部干扰时的互质因子摄动系统的鲁棒稳态追踪问题。
• 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
• Operator perturbations of Bessel sequences in a Hilbert space
  Hilbert空间中Bessel列的算子扰动
• 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。
• Since the circular restricted three-body problem model ignores the effect of perturbations, it can not accurately describe the dynamic characters of the three-body system.
  圆型限制性三体问题模型忽略了摄动因素的影响，在很多情况下不能足够准确地描述三体系统的动力学性质。
• 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。
• Planetary perturbations make the earth's orbit about the sun irregular.
  行星的摄动使得地球绕太阳的轨道是不规则的。