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。
• A Delay-Independent Stability Conditions for a Time-Varying Uncertain Systems with Nonlinear Perturbations
  一类时变非线性扰动不确定系统的时滞独立稳定条件
• All the osteological perturbations are consistent with recent elective surgeries.
  所有骨骼上的混乱都和最近的外科手术有关。
• 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。
• 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。
• 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。
• 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 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。
• 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
• 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。