| 释义 |
perturˈbational, a.
[f. prec. + -al1.]
Of, pertaining to, or of the nature of perturbation.
1849Herschel Astron. Pref. 5 That very delicate and obscure part of the perturbational theory. 1881Athenæum No. 2811. 343/1 A perturbational inequality of two hundred and forty years period in the motions of the earth and Venus. |