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电视差转台
释义
电视差转台
diàn shì chà zhuàn tái
利用外差法改变接收到的电视信号的载频并经放大再转发出去的装置。可使电视覆盖面增大,在山顶设差转台,可使山背后能收到电视节目。设备简单,能几次差转,起到中继接力作用。
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sustain harm
sustain in
sustain in flight
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sustaining collector voltage
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sustaining development degree
Sustaining expectation effect
sustaining exploitation
sustaining food
sustaining force
sustaining frame
Sustaining function
sustaining generator
sustaining industry
sustaining innovation
sustaining layers
sustaining load
sustaining love
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更新时间:2025/4/1 20:25:58