1. Department for the History of Science and Scientific Archaeology, University of Science and Technology of China, No. 96, Jinzhai Road, Hefei 230026, P. R. China
2. Henan Vocational College of Light Industry, No.2 Yuantian Road, Zhengzhou 450002, P. R. China
3. Staff Development Institute of CNTC, No.7, Xinyuan Road, Zhengzhou 450008, P. R. China
4. Department of Precision Machinery and Instrumentation, University of Science and Technology of China, No. 96, Jinzhai Road, Hefei 230026, P. R. China
5. School of Information Engineering, Zhengzhou University, No. 100, Science Avenue, Zhengzhou 450001, P. R. China