| 单词 | air whistle |
| 释义 | > as lemmasair whistle air whistle n. a whistle operated by the force of compressed air; cf. steam-whistle n. ΘΚΠ society > communication > indication > signalling > audible signalling > signalling with other sounding instruments > [noun] > sounding of whistle > types of whistle used as signal steam-whistle1840 air whistle1853 police whistle1872 bull1884 1842 Times 9 Dec. 5/5 The plan proposed for working the condensed air whistle is extremely simple.] 1853 Times 24 Mar. 3/5 Another of the exhibitors proposed to use an air whistle, placed in the guard's van, the air to be pumped into a cylinder fitted with a safety-valve, and worked by means of a piston rod and eccentric attached to one of the van axles. 1870 W. Boyd Morse Alph. Telegraphy by steam-whistle, air-whistle, musical instrument, or light. 1975 Amer. Ethnol. 2 279 Locomotive whistle and communicating (air whistle inside of locomotive cab) signals use many combinations of long and short whistles. 2005 Daily News (New Plymouth, N.Z.) (Nexis) 27 Sept. 4 It has a micro-processor which produces synthesised steam loco noises... There is also an air-whistle. < as lemmas |
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