propulsion 雅思GRE

1.A four-joint flexible underwater pisciform propulsion system is developed and the control flow chart is presented.

设计了四关节柔性水下仿鱼形推进器，给出了程图，建立了运动学方程。

2.2 Class B: AIRSHIP or DIRIGIBLE -An aerostat, equipped with means of propulsion and steering.

飞或飞艇—浮升器之一种，配备有推进方法和操纵舵。

3.In addition, the USAF continues to fund development work of the Aerojet (formerly Atlantic Research) Variable Flow Ducted Rocket ramjet system as a future propulsion option for an extended range AAM.

此外，美国空军继续投资于航空喷气研究所（原来的大西洋研究所）的可变喷管火发动机系统，将其作为增程空空导弹的未来推进选项。