| 单词 | power buzzer |
| 释义 | > as lemmaspower buzzer power buzzer n. now historical an electrical device used in the First World War (1914–18) to generate vibrations in a coded pattern to be transmitted through the ground and picked up by a receiver some distance away. ΘΚΠ society > communication > telecommunication > telegraphy or telephony > telegraphy > telegraph > [noun] > other parts of telegraphs electric wire1819 pecker1858 sounder1860 motograph1874 contact-point1879 phonopore1885 phonophore1886 separator1891 syntonizer1900 power buzzer1918 1918 Times 25 Apr. 2/6 For conspicuous gallantry and devotion to duty in preparing and executing the visual and power buzzer schemes of a division. 1928 E. Blunden Undertones of War xxvi I think I have the slightest aptitude for understanding the principle of electricity, the mechanism of the ‘fullerphone’ or ‘power buzzer’. 1972 Times 25 Nov. 16/6 He was responsible for building a trench wireless set... This was at a time when one of the earlier means of communication was the so-called ‘power buzzer’ whose operation immediately brought down a shower of shells round the transmitting station. < as lemmas |
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