variable propeller pitch的用法和樣例：
例句
- It introduces the motion requirement and the structural characters of yawing and variable pitch.
摘要簡述了偏航和變槳距系統結構特點和動作要求。 - A controller is designed using the robust regulator theory for a large pitch regula ted wind turbine while yawing.
應用魯棒調節器理論，為偏航時大型變槳距風力機組設計了一個運行於額定風速以上的控制器。
