“F数漂移式变焦距镜头”的概念、定义、翻译、参考文献-科学参考

单词	F数漂移式变焦距镜头
释义	F数漂移式变焦距镜头 Encyclopedia 艺术学镜头参数释 F-number drift zoom lensF数漂移式变焦距镜头当摄影镜头焦距f＇改变时，该摄影镜头的入瞳直径Dλ虽也跟着产生改变，但变化的倍率小于焦距f＇的改变，即f＇与Dλ二者的比值在变焦中改变了，从而使该摄影镜头的F数在变焦的全过程中产生变化的变焦距摄影镜头。
随便看	history of society history of sociology history of sociology of education history of soda industry history of soil and water conservation in China history of soil science history of Solomon Islands History of Song Dynasty History of Song Dynasty,block-printed edition,sixth year of the Zhizheng era,Yuan Dynasty history of Songhuajiang river conservancy history of sorghum cultivation History of Southern Dynasties History of Southern Han History of Southern Qi History of Southern Tang history of Soviet medicine history of Soviet-Russian psychology history of soybean cultivation history of soybean cultivation in China history of spaceflight in China history of Spanish mackerel fishing in China History of Storytelling of the Song Dynasty history of structural wind engineering history of sugar beet cultivation history of sugar cane cultivation

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