螺旋桨推进器测程仪 propeller type log
船用螺旋桨推进器 screw propellor for boat
螺旋桨推进器推进器 propeller
螺旋桨螺距推进器螺距 propeller pitch
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.
当要起飞时只需要将各组件组装一起后将飞机扔向空中，它通过携带的电动螺旋桨推进器升上天空。
Launching it is just a matter of snapping the parts together and throwing it into the air, whence it is carried aloft by an electric propeller.
它们使用的操纵和控制系统大多是由多个螺旋桨推进器组成的，这样的系统体积大、重量大、能耗高、综合效率低，并有较大的噪音和尾涡。
Their maneuvering and control systems are made up of several propellers. This system has many disadvantages such as big volume, high consuming of energy, low total efficiency , high noise and vortex.
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