... overrun 场端安全区 oversea flight 海上飞行 over-the-horizon detection 超视距探测 ...
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medical support of oversea flight 海上飞行卫勤保障
·2,447,543篇论文数据,部分数据来源于NoteExpress
Aperiodic ticket is widely sold in oversea aviation market. In civil some one airline is also operating it on a few of flight courses.
目前不定期票在国外航空市场已经大量实施,并且国内也有一家航空公司在一些航线上开始运作不定期票。
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