| 单词 |
topophone |
| 释义 |
topophone|ˈtɒpəfəʊn| [f. topo- +Gr. -ϕωνος sounding, ϕωνή voice, sound.] (See quots.)
1880Patent Specif. No. 495, A topophone, or instrument for locating sounds, applicable more especially to the navigation of a vessel in a fog. 1881Standard 1 Jan., The topophone of Professor Mayer..is intended to determine the direction and approximately the distance of a fog-horn. 1902Harper's Mag. Feb. 498 Another wireless telephone for maritime use is known as the topophone. Ibid. 499 By the use of the topophone,..sounds can be heard which are inaudible to the unassisted ear. |
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