| 单词 | wave-siren |
| 释义 | > as lemmaswave-siren wave-siren n. a form of the siren n. 7 in which a current of air is driven through a narrow slit against an undulatory curve on the periphery of a cylinder or disk. ΘΚΠ the world > matter > physics > science of sound > vibration > instrument for analysing vibration > [noun] sonometer1802 siren1822 sirenea1830 opeidoscope1873 flame manometer1875 manometric capsule1879 wave-siren1881 pitch meter1947 society > communication > indication > signalling > audible signalling > signalling with other sounding instruments > [noun] > hooter or siren whew1869 hooter1878 siren1879 wave-siren1881 siren alarm1950 1881 Nature 18 Aug. 359/2 Helmholtz..has constructed a new instrument, the wave-siren. 1890 S. P. Thompson in Nature 15 Jan. 250/2 Dr. Kœnig had recourse to the wave-siren, an earlier invention of his own. < as lemmas |
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