adjustable pitch airscrew

例句：

1. 1.The adjustable pitch airscrew allows for precise control of the aircraft's altitude.
   可调式螺旋桨允许精确控制飞机的高度。
2. 2.The engineer used an adjustable pitch airscrew to adjust the engine's speed.
   工程师使用可调式螺旋桨来调整发动机的速度。
3. 3.The adjustable pitch airscrew is a crucial component in the maintenance of aircraft engines.
   可调式螺旋桨是飞机引擎维护中的关键部件。