“f/number”的概念、定义、翻译、参考文献-科学参考

单词	f/number
释义	f/number Astronomy The number obtained by dividing the focal length of a lens or mirror by its diameter; it is the same as the focal ratio.
随便看	exterior angle(of a polygon) exterior angle(with respect to a transversal of a pair of lines) exterior derivative Exterior Gateway Protocol exterior orientation parameters exterior product external balance external bisector external conversion external device external diseconomies of scale external division(of a segment) external economies external economies of scale external force external fragmentation external interrupt externalism externality external labour market external link external mould external node external path length((of a tree)) external relations

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