推进器是由火箭发动机提供的，而不是螺旋桨和方向舵，这使得转向变得困难。
Propulsion is provided by a rocket engine, rather than a propeller and rudder, which makes steering difficult.
大多数使用电力驱动的螺旋桨和推进器进行操纵。
Most use electrically driven propellers or thrusters to manoeuvre.
只需按一个按钮，15秒钟的时间，翅膀就会自动地折叠起来，动力就会从螺旋桨推进器切换到后轮。
At the touch of a button it takes just 15 seconds for the wings to fold up automatically and the power to be re-routed from the propeller to the rear wheels.
应用推荐