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altitude restriction

['æltɪtju:d ,rɪ'strɪkʃ(ə)n]
航空, 加拿大 restriction d’altitude; altitude restriction
运输 limitation d'altitude
 英语 词库
altitude restriction ['æltɪtju:d ,rɪ'strɪkʃ(ə)n]
航空, 加拿大 A restriction to an altitude or altitudes imposed on a flight to ensure that separation criteria are met
航空, 美国人 An altitude or altitudes, stated in the order flown, which are to be maintained until reaching s/c a specific point or time. Altitude restrictions may be issued by ATC due to traffic, terrain, or other airspace considerations.