单词 | upcurrent |
释义 | upcurrentn. A rising current of air. ΘΚΠ the world > matter > gas > air > moving air > [noun] > a movement of air > a current of air > upward current uptake1887 upcurrent1909 updraught1909 1909 F. W. Lanchester in Flight 22 May 296/1 When a plane falls normally through a vertical path, there is set up around the edges an up-current of air. 1921 Flight 8 Sept. 604/1 This map brings out very clearly..the manner in which Klemperer followed the valleys and took advantage of the gusts, up-currents, etc., which were caused by the nature of the country. 1931 Air Ann. Brit. Empire 30 The most elementary form of up-currents are caused by the deflection of winds over hills..necessary for soaring flight. 1953 N. Tinbergen Herring Gull's World iv. 39 The influence of the upcurrent on their flight is seen most impressively when..one forces the gulls to make a detour out over the beach. 1979 B. L. C. Johnson Pakistan iv. 55/1 It limits the scope for upcurrents in the surface monsoon air stream to rise very high. This entry has not yet been fully updated (first published 1986; most recently modified version published online December 2021). < n.1909 |
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