| 释义 |
optimal, a. orig. Biol.|ˈɒptɪməl|
[f. L. optim-us best + -al1: cf. proximal.]
Best or most favourable, most satisfactory: cf. optimum.
1890Sibley in Nature 20 Nov. 70/1 (Rep. Brit. Assoc.) There is probably an optimal temperature, or one at which the process proceeds most rapidly or most favourably. 1900A. L. Loeb tr. J. Loeb's Compar. Physiol. Brain xv. 223 The greatest happiness in life can be obtained only if all the instincts—that of workmanship included—can be maintained at a certain optimal intensity. 1935Adams & Zener tr. Lewin's Dynamic Theory of Personality iii. 110 Optimal environmental conditions..vary considerably with different individuals. 1935Mind XLIV. 359 There might be optimal sense-data, such as the one which a man senses when he observes a penny head on, from a short distance, in a good light, with a normal eye, etc. 1956Amos & Birkinshaw Television Engin. II. xv. 222 The constants of a feedback circuit can be proportioned to give an optimally-flat response, i.e., one with an equation having no terms in frequency. Such feedback is termed optimal and gives the widest possible frequency coverage. 1961Atlantic Monthly Apr. 42/2 Students..have often told me that it doesn't pay to be too interested in anything, because then one is tempted to spend too much time on it, at the expense of that optimal distribution of effort which will produce the best grades. 1970Sci. Jrnl. Jan. 25/1 A controller..automatically adjusts the speed and feedrates of the drill so as to maintain optimal performance as the drill wears. 1971D. C. Hague Managerial Econ. (rev. ed.) i. 11 An optimal decision is the one which comes as close as possible to achieving a given objective.
Hence ˈoptimally adv., in the best or most advantageous way.
1933Proc. R. Soc. B. CXII. 505 The animal's tissues were not optimally hydrated. 1950D. Halliday Introd. Nucl. Physics ix. 340 Phase-defocused atoms are not optimally accelerated and do not contribute to the useful beam. 1956[see above]. 1972Sci. Amer. Sept. 148/3 The time of physicians is not always optimally employed. 1976Lancet 13 Nov. 1039/1 In the absence of bacteria the nitrosation reaction proceeds optimally at an acid pH. |