英语词汇“focal ratio”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	focal ratio
释义	focal ratio ˈfəʊkəlˈreiʃiəu 基本英英近义反义 n.焦距比数 Noun: the ratio of the focal length to the diameter of a camera lens system近义词 speed速度f number焦距比数stop number光圈数
随便看	limiting external layers of retina limiting,external membrane of retina limiting factor limiting factors limiting farmland system limiting fatigue deformability limiting fatigue deformation limiting fatigue stress limiting fault limiting feedback limiting feedforward limiting field limiting figure limiting film thickness limiting fissure limiting floodwater level limiting flood water level limiting flow limiting force limiting forepressure limiting form limiting fragmentation limiting fragmentation hypothesis limiting fragmentation model limiting frequence