1. College of Mechanical Engineering, Chongqing University, Chongqing, China
2. College of Mechanical and Power Engineering, Chongqing University of Science and Technology, Chongqing, China
3. College of Mechanical Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, China
4. School of Cultural Industry Management, Chongqing City Management College, Chongqing, China