排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2003, Vol. 21 Issue (6): 17-18    DOI: 10.3969/j.issn.1674-8530.2003.06.006
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Design of the Pilot Pressure-releasing and Pressure-continuous Valve
LI Zhi-peng, LIU Ming-Ian
Changsha Science and Technology University, Changsha, Hunan 410077, China

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