英语词汇optical crown怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	optical crown
释义	optical crown (低折射率的)冕光学玻璃
随便看	backdraft backdrafts backdrop backdropped backdropped或-dropt backdrops back East back echo backed backed cloth back edge back edging backed note backed-up value back electromotive force back e.m.f. back emf backen back end back-end backend performance back-end processor back ends back-ends back end-to

英汉双解词典包含483723条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。