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单词 zoom lens
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈzoom ˌlens, n. [countable]
  1. Cinema, Photography(in a camera or motion-picture projector) a lens that can be continuously adjusted so as to provide many different degrees of magnification with no loss of focus.

WordReference Random House Unabridged Dictionary of American English © 2024
zoom lens′, 
  1. Cinema, Photography(in a camera or motion-picture projector) a lens assembly whose focal length can be continuously adjusted to provide various degrees of magnification without any loss of focus, thus combining the features of wide-angle, normal, and telephoto lenses.
  • 1935–40

Collins Concise English Dictionary © HarperCollins Publishers::
zoom lens n
  1. a lens system that allows the focal length of a camera lens to be varied continuously without altering the sharpness of the image
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