英语词汇“f-system”是什么意思，“f-system”的读音、用法及例句翻译-烛光网

词汇	f-system
释义	f-sys·tem AHD[ĕfʹsĭs'təm] D.J.[ˈefˌsɪstəm]K.K.[ˈɛfˌsɪstəm]n.（名词） A method of indicating the relative aperture of a camera lens based on the f-number.f制：一种用f表达照相机镜头光圈大小的方法
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