英语词汇preamplifier怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	preamplifier
释义	preamplifier/pri:ˈæmplifaiə/n. an electronic device that amplifies a very weak signal (e.g. from a microphone or pick-up) and transmits it to a main amplifier (信号的)前置放大器 □ preamplified adj.
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