您要查找的是不是：
- The change of target of aviation weather service 1.The weather level that the improvement of aerostat function raised to fly since had aviation flight activity, had aviation weather service. 航空气象服务目标的转变1.;航空器性能的改进提高了飞行的天气标准自从有了航空飞行活动;就有了航空气象服务。
- Aviation Flight Activities 航空飞行活动
- Army Aviation Flight Activity 陆军航空兵飞行活动
- According to International Aviation Transportation Association (IATA) statistics, 80 percent of civil aviation flight accidents are now attributed to human unsafely factors. 国际航空运输协会(IATA)统计，所有飞行事故的80%25都与人的不安全行为有关。
- The approval of an air traffic control unit shall be obtained for a civil aircraft to conduct flight activities in a controlled airspace. 第七十四条民用航空器在管制空域内进行飞行活动,应当取得空中交通管制单位的许可。
- Article 74 The approval of an air traffic control unit shall be obtained for a civil aircraft to conduct flight activities in a controlled airspace. 第七十四条民用航空器在管制空域内进行飞行活动，应当取得空中交通管制单位的许可。
- National Aviation Flight Evaluation Center 国家航空飞行鉴定中心
- US Army Aviation Engineering Flight Activity 美国陆军航空工程飞行站
- Problem and Potential of China General Aviation Flight Training 我国通航飞行培训业面临的问题和发展潜力
- Research of Civil Aviation Flight Direct Operating Cost 民用航空航班直接运行成本测算分析
- United States Army Aviation Flight Information Bulletin 美国陆军航空飞行情报简报
- United States Army Aviation Flight Information Office 美国陆军航空飞行情报处
- He devoted all his life to China's aviation. 他的一生都奉献给了中国的航空事业。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- The flight to Accra goes twice a week. 飞往阿克拉的班机一星期开两班。
- His activities in London center around this spot. 他在伦敦的活动以这个地点为中心。
- The old woman fell down a flight of stairs. 那位老太太从一段楼梯上摔了下来。
- We must discuss the class activities in a body. 我们应该全体讨论班级活动。
- A flight of steps led up to the house. 一段台阶向上通到了屋前。
- Children like outdoor activities. 孩子们喜欢户外活动。
