英语词汇“focal ratio”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	focal ratio
释义	focal ratio (extremely rare) n WORD FAMILY focal ratio n the ratio of the focal length to the diameter of a (camera) lens system Syn\|Hyper f number, speed, stop number ratio the relative magnitudes of two quantities (usually expressed as a quotient)
随便看	goa bean vine go about go across goad goaded goading go after go against go-ahead go ahead goal goal-directed goalie goalkeeper goal-kick goalless goal line go all out goalmouth go along go a long way goalpost goaltender Goa powder go-around

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