改变螺旋桨各自的速度也因而成了操纵这部飞行器的方式之一。
Varying the speed of the propellers also provides a means of steering the aircraft.
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.
所得的回归表达式适用于计算机进行螺旋桨的进、倒车推(拉)力计算，同时便于进行船舶操纵性研究。
These expressions are suitable for calculating the value of the propeller thrust with computer and convenient for the study of the ship 's maneuverability.
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