рівень шумового фону в районі аеропорту
contemporary operational environment / contemporary operating environment (COE)
operational environment (OE) (obsolete, see `operating environment`)
acoustic beam
acoustic bullets
acoustic countermeasures
acoustic field
acoustic homing torpedo
acoustic impact
acoustic intelligence
acoustic mine
acoustic mine-hunting
acoustic sensor
acoustic target-sensor
acoustic warfare
acoustic warfare countercountermeasures
acoustic weapons
acoustic detecting apparatus
acoustic profile
underwater acoustic surveillance
acoustic beacon
acoustic lining
acoustic alteration
acoustic insulation
acoustic material
acoustic measurement station
acoustic noise
acoustic overhead
acoustic saturation
acoustic treatment
airport of debarkation (APOD)
airport of embarkation (APOE)
base airport