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barometric vertical navigation
航空, 加拿大	VNAV barométrique; baro-VNAV; navigation latérale/ navigation verticale
航空, 加拿大, 国际民航组织	navigation verticale barométrique
英语 词库
barometric vertical navigation
航空, 国际民航组织	A navigation system that presents to the pilot computed vertical guidance referenced to a specified vertical path angle VPA, nominally 3°. The computer-resolved vertical guidance is based on barometric altitude and is specified as a VPA from reference datum height RDH.