英语词汇“f-number”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	f-number
释义	f-number n. Photog. the ratio of the focal length to the effective diameter of a lens (e.g. f5, indicating that the focal length is five times the diameter). Etymology: f (denoting focal length) + NUMBER
随便看	Indic indicate indication indicative counselling counsellor count countable countdown countenance counter counter- counteract counter-attack counter-attraction counterbalance counterblast counterchange countercharge countercheck counter-claim counter-clockwise counter-culture counter-espionage counterfeit

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