180 helix blade with mid-split
3-D design of impeller’s blade
3D modeling of runner blade
A New Way of Distorted Blade Drawing
adjustable (blade) propeller
adjustable axial-flow pump blade
adjustable blade
可调叶片
可调叶片可调螺旋桨叶
动叶可调
可调节叶片
可调整叶片
可调桨叶
adjustable blade propeller pump