| 摘要 |
A fan blade comprising a hollow hub body being defined by a circumferential wall, a front wall integrally connected to said circumferential wall, a circular depression being provided on said front wall, said hollow hub body is provided with at least seven radially-spaced blade members wherein said radially-spaced blade members are being defined by curved narrow inner end integrally connected to said hollow hub body and terminates into a broader outer end that reduces air friction and produce lower amount of noise. |
