- geometric mean frequency
- середньогеометрична частота

*Англійсько-український словник авіаційних термінів / Уклад.: Р.О. Гільченко. - К.: НАУ.
2009.*

- geometric mean frequency
- середньогеометрична частота

*Англійсько-український словник авіаційних термінів / Уклад.: Р.О. Гільченко. - К.: НАУ.
2009.*

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