| 释义 |
small perturbation small perturbation[′smȯl ‚pərd·ər′bā·shən] (physics) A disturbance imposed on a system in steady state, with amplitude assumed small of the first order; that is, the square of the amplitude is negligible in comparison with the amplitude, and the derivatives of the perturbation are assumed to be of the same order of magnitude as the perturbation. |