1. Department of Mechanical Engineering, Tsinghua University, Beijing, China
2. Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Beijing, China
3. Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin, China
4. State Key Laboratory of Tribology, Tsinghua University, Beijing, China
5. Research and Development Department, Dasunbo Liquor Co., Ltd, Renhuai, China