Instead of using wings, the coleopter employed a circular extension serving as the outer part of the jet engine while helping the aircraft achieve level flight, as well as vertical ascent and landing.
环翼机没有尾翼，而是采用一个延伸的圆形作为外部引擎，帮助飞机完成水平飞行和垂直起飞降落。
2
With an EGR and inter-cooled technology, a new generation of diesel engine emission levels, the dynamic performance and carrying all comfortable got further ascent.