Journal of Northeastern University(Natural Science)
Coupled Dynamic Modeling for Polished Rod Load of Beam Pumping Unit
LI Xiang-yu， GAO Xian-wen， HOU Yan-bin， WANG Hong-ri
Journal of Northeastern University Natural Science . 2016, (9): 1225 -1229 .  DOI: 10.12068/j.issn.1005-3026.2016.09.003