英语词汇“dioptre”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	dioptre
释义	dioptre noun /daɪˈɒptə(r)/ /daɪˈɑːptər/ (US English diopter) (physics) jump to other results a unit for measuring the power of a lens to refract light (= make it change direction) Word Originlate 16th cent. (originally as diopter): from French, from Latin dioptra, from Greek, from di- ‘through’ + optos ‘visible’. The term was used in the early 17th cent. to denote an ancient form of theodolite; the current sense dates from the late 19th cent.
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英语词典包含84843条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。