单词 | perturbation |
释义 | per·tur·ba·tion (pûr′tər-bāshən) n. 1. a. The act of perturbing. b. The state of being perturbed; agitation. 2. A small change in a physical system, such as a variation in a planet's orbit resulting from the gravitational influence of other celestial bodies. per′tur·bation·al adj. |
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