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单词 inversely proportional
释义

inversely proportionaladj.

Brit. /ˌɪnvəːslɪ prəˈpɔːʃn̩(ə)l/, /ˌɪnvəːslɪ prəˈpɔːʃən(ə)l/, /ɪnˌvəːslɪ prəˈpɔːʃn̩(ə)l/, /ɪnˌvəːslɪ prəˈpɔːʃən(ə)l/, U.S. /ˌɪnvərsli prəˈpɔrʃ(ə)nəl/, /ˌɪnvərsli pərˈpɔrʃ(ə)nəl/, /ᵻnˌvərsli prəˈpɔrʃ(ə)nəl/, /ᵻnˌvərsli pərˈpɔrʃ(ə)nəl/
Origin: Formed within English, by compounding. Etymons: inversely adv., proportional adj.
Etymology: < inversely adv. + proportional adj.
1. Of two quantities: such that one increases in proportion to a decrease in the other.
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1723 S. Cunn & J. Keill tr. Euclid's Elements 126 Hence it is manifest, if four Magnitudes be proportional, that they will be also inversely proportional.
1875 Amer. Reg. 27 Feb. (London ed.) 7/3 The law is universal that intensity and duration of action are inversely proportional.
1955 Trans. Kansas Acad. Sci. 58 358 In general, temperatures and rainfall are inversely proportional.
2014 A. O. Surendranathan Introd. Ceramics & Refractories xv. 271 Density and porosity are inversely proportional.
2. Of one quantity regarded in relation to another: increasing (or decreasing) in proportion to a decrease (or increase) in the other. With to.
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1747 B. Martin Philosophia Britannica I. i. 21 The Heights to which the Water will rise over these Points will be inversely proportional to those Numbers.
1854 Sydney Morning Herald 26 Sept. 4/3 The distinctness with which his Excellency treated the various subjects on which he touched was nearly inversely proportional to their importance.
1882 Jrnl. Telegr. 20 Aug. 161/2 The resistance of gases is inversely proportional to the strength of the current.
1962 G. Murchie Music of Spheres x. 315 And might he [sc. Newton] not have heard of Kepler's original speculation that the intensity of this yearning is inversely proportional to the square of the distance of separation.
2004 G. North Observing Variable Stars, Novae & Supernovae ii. 25 The size of the exit pupil is inversely proportional to the magnification the eyepiece produces with the telescope.
This entry has been updated (OED Third Edition, June 2019; most recently modified version published online March 2022).
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adj.1723
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