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 Qualitative Study of a Food Chain System with Defensive Ability and Impulsive Perturbations
  一类具有防御能力及脉冲扰动的食物链系统的定性研究
• 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
• 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。
• Under the action of universal gravitational forces the small perturbations will grow.
  在万有引力的作用下，小扰动会加强。
• 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。
• 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。
• 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。
• The variation equation of the satellite orbit elements under both J2 and drag perturbations was derived based on the Gauss perturbation equation.
  基于高斯摄动方程，推导了卫星在同时考虑J2和大气摄动情况下的轨道根数变化方程。
• 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
• Closedness and Semicontinuity of Cone Efficient Solution Sets for Multiobjective Programming under Two Perturbations
  双扰动多目标规划锥有效解集的闭性和半连续性