| 单词 | deaf-aid |
| 释义 | > as lemmasdeaf-aid deaf-aid n. a hearing aid. ΘΚΠ the world > health and disease > healing > audiology or audiometry > [noun] > aids to defective hearing trunk1546 otacousticon1615 otacoustic1617 ear-spectacle1626 sarbacane1644 acoustic1659 acousticon1660 hearing-trumpet1725 ear trumpet1731 trumpet1774 otophone1839 auricle1864 audiphone1880 osteophone1892 microphonograph1897 hearing aid1922 deaf-aid1934 1934 Discovery Nov. 324/2 The combined radio-gramophone and deaf-aid. 1939 Nature 15 Apr. 633/1 An efficient type of deaf-aid is operated by a pick-up coil, in which are induced currents from an energized cable hung round the auditorium or placed under the carpet. < as lemmas |
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