排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (6): 715-720    DOI: 10.3969/j.issn.1674-8530.2012.06.019
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Twostep throttle properties of hydraulic valve ports
 YUAN  Shi-Hao, YIN  Chen-Bo, LIU  Shi-Hao
(1.Institute of Automobile and Construction Machinery, Nanjing University of Technology, Nanjing, Jiangsu 210009, China; 2.Institute of Electrical and Mechanical Enginering, Hainan University, Haikou, Hainan 570228, China)

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