排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2001, Vol. 19 Issue (2): 19-21    DOI: 10.3969/j.issn.1674-8530.2001.02.005
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The Variable Frequency Speed Analysis of Applicability and Economic Advisability in Irrigation and Drainage Pumping Station
MA Tai ling, YUAN Bao hui

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