controllable pitch propeller control system

例句：

1. 1.The aircraft's controllable pitch propeller control system is designed to provide precise control over the aircraft's altitude and direction.
   该飞机的可控螺旋桨控制系统设计用于提供对飞机高度和方向的精确控制。
2. 2. The pilot must be able to control the aircraft's controllable pitch propeller control system effectively toensure safe flight.
   飞行员必须能够有效地控制飞机的可控螺旋桨控制系统，以确保飞行安全。
3. 3. The development of this control system has significantly improved the efficiency and reliability of the aircraft's controllable pitch propeller control system.
   这种控制系统的开发显著提高了飞机可控螺旋桨控制系统的效率和可靠性。