摄动 meaning in English

[天文学] perturbation; disturbance

Venus, earth, and other planets also perturb mercury's motion .
金星，地球和其他行星也使水星的运动受到摄动。
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。
A method for deriving the perturbation equation
直接推导摄动运动方程的一种方法
The singularly perturbed nonlinear boundary value problem
奇摄动非线性边值问题
On the secular terms in random perturbation analysis
非平稳随机摄动分析中的久期项效应

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