英语词汇“phonodynamograph”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	phonodynamograph
释义	> as lemmas phonodynamograph † phonodynamograph n. Obsolete rare an instrument for amplifying the vibrations of a diaphragm, esp. in an acoustic device. ΚΠ 1882 Nature 3 Aug. 331/1 Mr. W. B. Cooper has lately brought before the Franklin Institute a device for increasing the dynamic effect of the vibrations of diaphragms..called a ‘phonodynamograph’. extracted from phono-comb. form < as lemmas
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> as lemmas