superheterodyne receiver

柯林斯词典

superheterodyne receiver /ˌsuːpəˈhɛtərəˌdaɪn/

• 1. N a radio receiver that combines two radio-frequency signals by heterodyne action, to produce a signal above the audible frequency limit. This signal is amplified and demodulated to give the desired audio-frequency signal 超外差式收音机 (Sometimes shortened to superhet)

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