排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (3): 289-294    DOI: 10.3969/j.issn.1674-8530.2012.03.009
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Variable pitch profile equation of screw centrifugal pump

(School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China)

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