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| Autorisation valide à... (This expression is used in conjunction with a time); release time | |||
| 英语 词库 | |||
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| An expression used in radiocommunication to indicate a departure time restriction issued to a pilot by ATC either directly or through an authorized relay when it is necessary to separate a departing aircraft from other traffic | |||
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Clearance valid : 2 短语, 1 学科 |
| 航空 | 2 |