| 单词 | direct proportion |
| 释义 | > as lemmasdirect proportion direct proportion n. Mathematics the relationship between quantities whose ratio is constant; a relationship between two measurable attributes, quantities, activities, etc., in which an increase in one occurs at the same time as a corresponding increase in the other; cf. inverse proportion at inverse adj. 3a. ΘΚΠ the world > relative properties > number > ratio or proportion > [noun] > equal or constant proportiona1387 analogy?a1425 direct proportion1636 direct ratio1702 1636 W. Bedwell tr. P. de la Ramée Via Regia ad Geometriam 41 This kinde of proportion rationall and expressible by a number, is not to be had in first figures themselves: but in those that are equally manifold to them, as was taught even now in direct proportion. 1764 J. Ferguson Astron. Explained (ed. 3) 340 The quantity of this parallax is in direct proportion to the absolute difference in the time of the egress arising from it. 1877 Spirit of Times 24 Nov. 461/2 (advt.) A consequent waste of power, thus detracting from his speed in direct proportion to the spread of the axle. 1910 Encycl. Brit. IX. 182/2 The current varies in direct proportion to the electromotive force. 2004 Independent 3 Aug. 30/2 The rise in popularity of complementary medicine is in direct proportion to the waning of the patient's adherence to the ‘doctor knows best’ ethos. < as lemmas |
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