| 单词 | motographic |
| 释义 | > as lemmasmotographic ΚΠ a1884 E. H. Knight Pract. Dict. Mech. Suppl. 618/2 Motographic Receiver, an invention of Edison, by which the volume of sound is increased in a telephonic receiver. Called also Electro-motograph. 1891 G. H. Stockbridge Later Hist. Electr. in Amer. 188/1 He [sc. Edison] converted the motographic relay into a sound receiver. < as lemmas |
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