排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2008, Vol. 26 Issue (1): 37-39    DOI: 10.3969/j.issn.1674-8530.2008.01.010
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Drawing method for double channel impeller
ZHANG Jing, QI Xue-yi, HOU Yi-hua
Fluid Power and Control College, Lanzhou University of Technology, Lanzhou, Gansu 730050, China

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