英语词汇“preamplifier”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	preamplifier
释义	pre·amplifier \(ˈ)prē+\ noun Etymology: pre- + amplifier : an amplifier designed to amplify extremely weak signals obtained from a microphone, phonograph pickup, or television camera before the signals are fed to additional amplifier circuits
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