| 单词 | sound-locator |
| 释义 | > as lemmassound-locator sound-locator n. ΚΠ 1919 Nature 30 Oct. 182/1 Sound-locators were also used to board anti-submarine craft. 1922 Encycl. Brit. XXX. 88/2 The sound locator is an instrument which is intended to indicate the angle of elevation, and the bearing in azimuth, of aircraft audible but invisible from the ground. 1941 D. Masters So Few ix. 106 Human ears listening at the sound locators to detect the course [of the aircraft]. 1977 Jrnl. Royal Soc. Arts 125 419/2 The Sound Locator..greatly assisted the anti~aircraft personnel to plan their defences in advance. < as lemmas |
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