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Emergency Security Control of Air Traffic Plan
航空, 加拿大	plan relatif au contrôle de sécurité d’urgence de la circulation aérienne; plan ESCAT
英语 词库
Emergency Security Control of Air Traffic Plan
航空, 加拿大	The measures to be implemented by Her Majesty in right of Canada in accordance with the North American Aerospace Defence Command NORAD Agreement in the case of an air defence emergency