| 摘要 |
<p>The blade has two components (4) that are separately arranged by a space in a lamella-like and offset manner, where the blade is fitted into an impeller. The components are designed in a blade-shape, where angles of components from internally outwards to center line are larger. The components exhibit a curvature in an upstream flow direction, and are stretched in a stream out direction, where the curvature is concave or convex.</p> |
