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】孔径焦距比，f值
随便看	coercively coercively coerciveness coerciveness coercivenesses coercivities coercivity coesite coesites coessential coessentialities coessentiality coessentiality coessentially coessentially coessentialness coessentialness coessentialnesses coetaneities coetaneity coetaneous coetaneously coetaneously coetaneousness coetaneousness

英汉双解词典包含548777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。