| 释义 |
ˌover-coˈrrect, v.
[over- 24.]
1. Optics. trans. To correct (a lens) so that there is an aberration opposite to that of the uncorrected lens; spec. to correct for chromatic aberration to such an extent that red light is focused beyond violet light. Opposed to under-correct. So ˌover-coˈrrected ppl. a.
1829H. Coddington Treat. Reflexion & Refraction of Light vi. 253 If a concave flint glass lens..be too powerful for a convex crown glass one when placed in contact, so as to over-correct the colour, as it is said, the achromatism may be made more perfect by separating them a little. 1867J. Hogg Micros. i. ii. 47 The effect..of projecting the blue image beyond the red..is called over-correcting the object-glass. 1884Science III. 487/2 An over-corrected object-glass may be adjusted to any desired extent, while one that is under-corrected can only be used in the state in which it left the maker's hands. Ibid., If we suppose a person to be blind to the extreme blue and the violet rays only of the spectrum, to him an over-corrected object-glass would be perfect. 1885T. Longmore Illustr. Optical Manual (ed. 3) ii. 43 It should be ascertained if the M[yopia] has not been over-corrected by the lenses supplied, and the eyes brought into a condition of H[ypermetropia]. 1975M. Ruben Contact Lens Pract. ii. 19/2 In hypermetropia..one eye (the non-dominant) can..be overcorrected by as much as 1·5 D so as to give the best binocular acuity for distance.
2. trans. and intr. To make an excessive correction to or in (something); to correct (someone) too frequently.
1956Publ. Amer. Dial. Soc. xxvi. 45 But he may still have trouble remembering which sound belongs in which words, and in his anxiety he will overcorrect and hear sung for sun or some. 1966J. Derrick Teaching Eng. to Immigrants iii. 117 In this, as in all questions of pronunciation teaching, the greatest care and tact is necessary, so that the nervous pupil, from being over-corrected, does not become more nervous and inhibited. 1966Publ. Amer. Dial. Soc. 1964 xlii. 5 To overcorrect a slide, causing rear of car to waggle like a fishtail. 1966Rep. Com. Inquiry Univ. Oxf. II. 325 This calculation almost certainly over-corrects for any error. 1967J. Rathbone Diamonds Bid iv. 39 The car..slewed towards the right. I over-corrected and the on-side fender hit a low wall. 1974L. Deighton Spy Story xx. 215 The machine tottered into the air, swinging as the nervous pilot over-corrected. 1976Columbus (Montana) News 10 June 4/3 The driver overcorrected, causing the vehicle to go into a skid, overturning in the median after crossing the road. |