1. Zhang Lei:
Xi’an University of Science and Technology, Xi’an, China.
2. He Huibin:
Xi’an University of Science and Technology, Xi’an, China.
3. Zhang Lei:
China National Heavy Machinery Research Institute, Xi’an, China.
4. Sha Xiangling:
Xi’an University of Science and Technology, Xi’an, China.
5. Ma Zhenhua:
Xi’an University of Science and Technology, Xi’an, China.
6. Shu Hao:
Xi’an University of Science and Technology, Xi’an, China.
7. Tian Ye:
Xi 'an west mine environmental protection technology co., LTD, China.