英语词汇focal ratio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	focal ratio
释义	focal ratio 【摄影术】f值，孔径焦距比
随便看	resumptions resumptive resumptively resumé resupinate resupination resupine resupplied resupplies resupply resupplying resurbia resurface resurfaced resurfacer resurfacers resurfaces resurfacing resurfacings resurge resurged resurgence resurgences resurgent resurgent ejecta

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。