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。
• 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。
• 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
• But smaller-amplitude perturbations develop rapidly and will soon make a great impact on the precipitation forecast.
  但是小振幅扰动的迅速发展，很快就会对降水预报造成较大的影响。
• 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
• 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。
• 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）
• 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
• 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