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单词 video frequency
释义

WordReference Random House Unabridged Dictionary of American English © 2024
vid′eo fre′quency, [Television.]
  1. Radio and Televisiontransmission frequency of the television picture.
  2. Radio and Televisionany of the frequencies present in the output of a television camera, from almost 0 to over 4 megahertz.
  3. Radio and Televisionany frequency applied to the receiver's picture tube in order to display the picture.
  • 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
video frequency n
  1. the frequency of a signal conveying the image and synchronizing pulses in a television broadcasting system. It lies in the range from about 50 hertz to 8 megahertz
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