单词	一律灰色
释义	同Greys
随便看	aircraft observation aircraft observation; aircraft report aircraft observer aircraft operating weight aircraft oxygen supply systems aircraft-- parasol aircraft; parasol aircraft; passenger aircraft-- patrol aircraft; patrol aircraft-pavement classification number system aircraft-pavement classification number system (acn-pcn) aircraft performance aircraft; personal aircraft pitch control aircraft plotter aircraft--plotter aircraft powerplant aircraft; primary training aircraft; private aircraft propeller aircraft propulsion aircraft propulsion system aircraft; prototype aircraft-- prototype (y)