books النسبة البؤرية
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# focal infection theory
# Focal brain lesions
# focal plane position
# Focal groups theory and practice
# Focal religion
# focal group
# Focus groups and qualitative research
# Focus groups
# Hyperfocal distance
# focal neurological signs
# focal lesions
# focal lens
# deep focal distance
# How do I calculate the ratio?
# focus image
# Golden Ratio
# message in ratio
# Explain ratio and proportion
# Ratio and Proportion Overview
# Some Uses of Ratio and Proportion
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النسبة البؤرية (Info)
النِّسْبَة البُؤَرِيَّة:- the ratio of the focal length to the diameter of a (camera) lens system (Arabic WordNet)
