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usability factor

avia. коефіціє́нт використа́ння
 English thesaurus
usability factor
avia. The percentage of time during which the use of a runway or system of runways is not restricted because of the cross-wind component. (Cross-wind component means the surface wind component at right angles to the runway centre line.)
usability factor
: 6 phrases in 2 subjects
Airports and air traffic control2
Aviation4