| 单词 | wave-disk |
| 释义 | > as lemmaswave-disk wave-disk n. a metal disk with a waved edge, used in the wave-siren. ΘΚΠ the world > matter > physics > science of sound > vibration > instrument for analysing vibration > [noun] > component of siren wave-disk1890 1890 S. P. Thompson in Nature (1891) 8 Jan. 226/2 Two such wave-disks, looking rather like circular saws with irregular teeth. < as lemmas |
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