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2 Noun 0 Verb 0 Adj. 0 Adv.
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ENf numberNoun
EN
The ratio of the focal length to the diameter of a (camera) lens system
focal ratiostop number
bn:00032579n Concept
EN
F number is a correlation number used in the analysis of polycyclic aromatic hydrocarbons as a descriptor of their hydrophobicity and molecular size.
bn:00380098n Concept
English:
chemistry

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