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8月30日,民航华北地区空管体制改革大会在北京隆重召开,民航总局杨元元局长为民航华北地区空管局揭牌,总局王昌顺副局长、总
On August 30, the air traffic control system reform conference of North China in North China was grandly held in Beijing. Director General Yang Yuanyuan of Civil Aviation of China Civil Aviation Civil Aviation Administration of China opened its air traffic control authority in North China. Deputy Director Wang Changshun,