英语词汇“focal ratio”的读音、翻译、释义、用法及例句-布网

词汇	focal ratio
释义	focal ratio n.（名词 noun）【光•摄】F 值,光圈值孔径焦距比(= f-number) 同义: f-numberF 值,光圈值孔径焦距比
随便看	painted grass painted lady painted sepulcher malediction malefaction malefactor male fern malefic maleficence maleficent maleic acid maleic anhydride maleic hydrazide male menopause malemute malentendu male orchis male rhyme male screw male-sterile Malevich malevolence malevolent malfeasance malformation

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