Institution: | 1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, PR China;2. Quality Development Institute, Kunming University of Science and Technology, Kunming 650093, PR China;3. School of Statistics and Mathematics, Yunnan University of Finance and Economics, Kunming 650221, PR China;4. Faculty of Mechanical and Electrical Engineering, Yunnan Agricultural University, Kunming 650201, PR China |