| 单词 | vortex-ring |
| 释义 | > as lemmasvortex-ring vortex-ring n. ΚΠ 1867 P. G. Tait tr. Helmholtz in London, Edinb. & Dublin Philos. Mag. 4th Ser. 33 510 These vortex-rings travel on,..and are widened or contracted by other vortex-rings. 1878 W. K. Clifford Elem. Dynamic iii. 205 Suppose that in a mass of fluid there is a single vortex ring of any form (i.e. a vortex-filament returning into itself). < as lemmas |
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