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单词 前置放大器
例句 DEFINITIVE EXAMPLES 权威例句〔preamplifier〕An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages.前置放大器:电子线路或装置,用来探测并加强无线电接收机所发出的微弱信号,从而使其达到更加有力的增幅程度美国传统〔preamp〕A preamplifier.前置放大器美国传统
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