| 单词 | perturbation |
| 释义 | perturbation n. 1. the act or an instance of perturbing; the state of being perturbed. 2. a cause of disturbance or agitation. 3. Physics a slight alteration of a physical system, e.g. of the electrons in an atom, caused by a secondary influence. 4. Astron. a minor deviation in the course of a celestial body, caused by the attraction of a neighbouring body. |
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