blade cyclic pitch

例句：

1. 1. The machine's blade pitch is set to a precise angle for optimal cutting efficiency.
   这台机器的刀片角度被设定为精确的角度，以获得最佳的切割效率。
2. 2. The blade pitch of the turbine is critical in determining its performance.
   涡轮机的叶片节距对其性能至关重要。
3. 3. The new design uses a more efficient blade pitch, resulting in reduced noise and vibration.
   新设计采用了更高效的叶片节距，从而减少了噪音和振动。