THE TESTING TECHNOLOGY AND APPLICATION OF PUMPING OIL WELL TRUE LIQUID SURFACE
LI Zhong-hu LU Zhang-cheng WANG Yong-wei et al
西南石油大学学报(自然科学版) . 2003, (1): 49 -51 .  DOI: 10.3863/j.issn.1000-2634.2003.01.014