dioptrics
noun /daɪˈɒptrɪks/
  /daɪˈɑːptrɪks/
[uncountable] (physics)- the scientific study of refraction (= the way light changes direction when it goes through glass, etc.)
| 单词 | dioptrics | 
| 释义 | dioptricsnoun /daɪˈɒptrɪks/  /daɪˈɑːptrɪks/[uncountable] (physics) 
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