英语词汇“sound head”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	sound head
释义	WordReference Random House Unabridged Dictionary of American English © 2024 sound′ head′, [Motion Pictures.] Cinemaa mechanism through which film passes in a projector for conversion of the soundtrack into audio-frequency signals that can be amplified and reproduced. Also called sound′ gate′. 1930–35
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