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单词 bandspread
释义
bandspread

Electronics and Electrical Engineering
  • A technique used in communications receivers that allows the receiver to select a transmission of a narrow-frequency bandwidth in close proximity to other transmissions: the bandwidth is spread over a wider physical or electrical range so that tuning is made easier. An example is the use of a gearing system to desensitize the rotation of the tuning adjustment in order to allow finer frequency selection. A similar effect can be obtained by a coarse and fine electrical adjustment where electronic tuning is employed.


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