1.
Airfoil Design of High Altitude Long Endurance Unmanned Air Vehicle
高空长航时无人机翼型设计方法研究
2.
FADEC System Design for the Aero Engine of a High Altitude and Long Endurance UAV;
高空长航时无人机数控系统总体技术研究
3.
Conceptual Layout Design of the Joined-Wing High-Altitude-Long-Endurance UAV
联翼高空长航时无人机总体布局设计研究
4.
Technological analysis for the turbofan engine of high altitude long endurance unmanned aerial vehicles
高空长航时无人机用涡扇发动机技术分析
5.
High-Altitude Long-Range Airship Dynamic Model and Trajectory Optimiziation;
超高空、长航时飞艇动力学模型与航迹优化
6.
How long does regular mail take?
非航空信要走多长时间呢？
7.
approximately how long does it take for a letter to go airmail from here to Beijing?
一封航空信从这儿寄往北京大约要花多长时间?
8.
How long does it take for an airmail to get to Manchester?
寄往曼彻斯特的航空信得多长时间才能到？
9.
Study of Automatic Focusing Technique for Long Focus Oblique Real-Time Aerial Camera;
长焦距斜视实时航空相机自动调焦技术的研究
10.
The International Aviation Reinsurance community is anticipating a growing level of risk exposures commensurate with the expanding Aerospace sector.
国际航空再保险协会预测，随着航空航天事业的增长，风险也同时在加大。
11.
During cruise flight, airliner cabin relative humidity is very low.
旅客机高空巡航时,座舱内相对湿度很低。
12.
Relationship between Surface Length and Inside Length of Fatigue Crack in Ultra-high Strength Steel
航空用超高强度钢疲劳裂纹表面长度与内部长度之间的关系
13.
When the sun set, the long legs jumped up.
当夕阳快落时，长腿高高腾空跃起。
14.
Another idea is to use temp altitudes in data blocks on aircraft to remind you that an altitude change needs to be made.
另一种说法是在航空器上的数据模块中使用临时高度以提醒你需要改变航空器的高度。
15.
GPS/GLONASS Attitude Determination Research under Long Endurance and High Dynamic Conditions;
长航时高动态条件下GPS/GLONASS姿态测量研究
16.
airmail special delivery for this one.
这封要寄航空．限时专送。
17.
prompt domestic air parcel
限时专送国内航空包裹
18.
PICAO (Provisional International Civil Aviation Organization)
临时国际民用航空组织