英语词汇“area navigation high route”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	area navigation high route
释义	area navigation high route area navigation high route An area navigation route in which the airspace extends from 18,000 ft AMSL (above mean sea level) to FL (flight level) 450 (45,000 ft).
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