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单词 phonodeik
释义

phonodeik

noun

pho·​no·​deik
ˈfōnəˌdīk
plural -s
: an instrument for making photographic records of sound waves in air by means of a tiny mirror that is oscillated in a rotary manner by sound waves agitating a glass diaphragm and that by its reflections of a ray of light traces corresponding paths on a moving film

Word History

Etymology

phon- + -deik (from Greek deiknynai to show)

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更新时间:2025/2/24 5:03:31