英语词汇focal ratios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 ratios
释义	focal ratio 【摄影术】f值，孔径焦距比
随便看	semimicro semimicroanalyses semimicroanalysis semimilitary semimillenary semiminor axis semimobile artillery semimoist semimonastic semimonocoque semimonthlies semimonthly semimute semimutes semimystical semimythical semina seminal seminal bursa seminal duct seminal ducts seminal fluid seminal fluids seminal groove seminalities

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。