| 摘要 |
A blade structure for centrifugal fan includes a hub, a first blade unit, and a second blade unit. The hub has a connection section formed therearound and the connection section has a first side and an opposite second side. The first and the second blade unit are radially outward extended from the first and the second side, respectively, of the connection section. By providing the first and the second blade unit around the hub of a centrifugal fan, the air flows and air pressure produced by the centrifugal fan can be largely increased at effectively reduced noise.
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