• Ground effect machines (hovercraft), convertiplanes or aircraft that hover by means of propeller slipstream (s) deflected downward are not considered to be helicopters.

    地面效应装置(如气垫船),倾斜旋翼任何依靠螺旋桨所产生向下滑流而悬浮航空器,皆属于直升机

    youdao

  • Ground effect machines (hovercraft), convertiplanes or aircraft that hover by means of propeller slipstream (s) deflected downward are not considered to be helicopters.

    地面效应装置(如气垫船),倾斜旋翼任何依靠螺旋桨所产生向下滑流而悬浮航空器,皆属于直升机

    youdao

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