Guo Qingfeng

Aplication of PMSM Drive System in Air-conditioning

Liang Bo, Zhang Youlin, Guo Qingfeng, 2011 .

Analysis on the leakage pressure of thief formation

Guo Qingfeng, G. Qingfeng, 2010 .

Study of Key Technology of Managed Pressure Drilling

Guo Qingfeng, 2012 .

Overview,Application Prospects and Critical Technologies of Micro Hole Drilling Technology

Guo Qingfeng, 2010 .