英语词汇“ifr control services”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	ifr control services
释义	IFR control services IFR (instrument flight rules) control services The services provided by area control service and terminal control service. Both of these are ATC (air traffic control) units.
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IFR control services