| 单词 | catoptrics |
| 释义 | Word Frequency catoptrics(kəˈtɒptrɪks) noun (functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors Derived forms catoptric (caˈtoptric) or catoptrical (caˈtoptrical) adjective Word origin C18: from Greek katoptrikos, from katoptron mirror |
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