L2-projection and H1-projection meth-ods
orthographic projection to be transferred into perspective projection
projection law of axonometric projection
(1919) The Paris Aviation Covenant
7050 Aviation Aluminum-Alloy
active aviation election jamming equipment
AD [= aviation machinist’s
Air Force Aviation Meteorological Research Institute
Aircrew members of civil aviation
Airworthiness Approval Tag of Federal Aviation Adm
Army rating method of aviation fuels
aviation
航空医学
航空
飞行
民航
飞机
航空安全
航空兵
飞控
航空业
光电集成电路
航空学
航空汽油
飞航无线电