1、Failure analysis of the secondary region in the contra-rotating axial local fan
5、pekingese dogs were and the local fan in the country (vassal State) reveal no doubt that only a simple use of violence in the so-called "law enforcement."
4、The technical measures are given out by which the hump zone of characteristic curve of the local fan can be eliminated using a current divider and the operaiting stability of the fan can be improved.
6、The paper summarizes mainly the research and control of pneumatic noise of local fan, the sonic model of isolated blade wheel and the control method of noise in home and foreign countries.
3、Used on the newly developed high - efficiency and low energy consumption local fan are cast aluminum blades.
2、At present in tape transport planes, to coal, emulsion pump, local fan a successful application.
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