排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2001, Vol. 19 Issue (6): 10-11    DOI: 10.3969/j.issn.1674-8530.2001.06.003
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InnovationThe Original Power of Enterprises Development
XU Ling, DING Ke
Nanjing University Economic College; Shanghai Qingpu Area Research Institute on Water Conservancy Planning

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