1. Key Laboratory of High Efficiency and Clean Mechanical Manufacture of Ministry of Education National Demonstration Center for Experimental Mechanical Engineering Education School of Mechanical Engineering Shandong University Jinan P. R. China
2. Shenzhen Research Institute of Shandong University Shenzhen Guangdong P. R. China
3. Suzhou Research Institute Shandong University Suzhou Jiangsu P. R. China
4. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian Liaoning P. R. China