U odeljku Moje reči ostaće zabeleženi svi izrazi koje ste izdvojili pri pretrazi. Kliknite na “Dodaj u Moje reči” pored izraza koji želite da dodate u ovaj odeljak.
The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29.92 inches of mercury (1013.2 m.bs); and for true altitude, mean sea level.