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单词 achromat
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ach•ro•mat  (akrə mat′),USA pronunciation n. 
  1. OpticsSee achromatic lens. 
  • by shortening 1905–10

Collins Concise English Dictionary © HarperCollins Publishers::
achromat /ˈækrəˌmæt/ n
  1. Also called: achromatic lens a lens designed to bring light of two chosen wavelengths to the same focal point, thus reducing chromatic aberration
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