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

• 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。
• 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。
• 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。
• Angular perturbations tend to increase instead of decrease.
  角扰动倾向于增加而不是减少。
• 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
• 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
• Stability of Multiobjective Programming under the Constraint Cone and the Control Cone Perturbations
  约束锥和控制锥扰动多目标规划的稳定性
• 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。
• 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。
• A food chain model of three species with impulsive perturbations and mixed functional response is proposed and studied.
  提出并研究了一类具有脉冲干扰和混合功能反应的三种群捕食链模型。