| 摘要 |
<P>PROBLEM TO BE SOLVED: To eliminate high-tone of a rotary blade attached to a wind power generator. <P>SOLUTION: High-tone of the rotary blade is eliminated, by a method of sticking material with projections on a back side of the rotary blade to generate swirls, or a method of manufacturing a blade with projections by using a mold. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
