Air propeller is the tool which transforms the power of aerialengine to the thrust of aircraft.
空气螺旋桨是把航空发动机的动力转化为飞行器推进力的工具。
2
First entering service in the 1980s, the twin-engine fighter plane was the U.S. 's first strike fighter - an aircraft capable of attacking both ground and aerial targets.
在上世纪八十年代开始服役，这是美国的第一个双引擎攻击战斗机，它即能攻击地上目标也能攻击空中目标。
3
The counterweight of an aerial piston engine made in American is object of repair technology research in this paper.