英语词汇focal length的意思翻译、读音、音标、释义-英汉词典-范文网

单词	focal length
释义	focal lengthBrE /ˌfəʊkl ˈleŋθ/ NAmE /ˌfoʊkl ˈleŋθ/ noun (physics物理) the distance between the centre of a mirror or a lens and its focus焦距
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