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nutating feed造句

"nutating feed"是什么意思   

例句與造句

  1. A nutated feed offsets the antenna at an angle to a fixed feed horn, and then rotates the antenna.
  2. A variation of a nutated feed makes the feed move in a small circle, rapidly and continuously changing the pointing direction of the beam.
  3. Basically conical scan ( of the non-revolving nutating feed type ), the size of the scan cone cyclically increased and decreased roughly twice a second.
  4. It's difficult to find nutating feed in a sentence. 用nutating feed造句挺難的

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