1. State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an 710049 P. R. China
2. NMPA Key Laboratory for Research and Evaluation of Additive Manufacturing Medical Devices Xi'an Jiaotong University Xi'an 710049 P. R. China
3. School of Energy and Power Engineering Xi'an Jiaotong University Xi'an 710049 P. R. China