| 单词 | electric bell |
| 释义 | > as lemmaselectric bell electric bell n. a bell operated by electricity, typically having a hammer operated by a solenoid which makes a rapid succession of hits as a result of a make-and-break contact on the solenoid. ΘΚΠ society > communication > indication > signalling > audible signalling > ringing of bells as signal > [noun] > electric bell electric bell1839 trembler-bell1884 1839 Bradford Observer 28 Nov. Lecture 1.—Electricity… Pith Balls and Dancing Figures. Electric Bells. 1844 E. A. Poe in U.S. Mag. & Democratic Rev. Nov. 490/2 At all risks, let there be a few vivid sentences imprimis, by way of the electric bell to the telegraph. 1871 Proc. Royal Soc. 1870–71 19 256 For electric bells, and all telegraphic testing and signalling on shore, the new form of battery will probably be found easier of management. 1974 E. Bowen Henry & Other Heroes iv. 79 Tanner turned out to be a boarding school kept open all year, complete with..electric bells that rang every hour to make you start or stop doing whatever the schedule said. 2010 D. Sang Cambr. IGCSE Physics Coursebk. iv. 218/2 An electric bell is a surprisingly clever device. It works using direct current from a battery, but it makes a hammer move repeatedly back and forth to strike the gong. < as lemmas |
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