high-frequency wire-wound resistor 高频线绕电阻器 high-frequency-amplification receiver 直收式接收机 high-fundamental frequency blade 高基频叶片 ..
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high frequency amplification receiver 高放式接收机
amplification receiver
放大接收机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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。
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