国家自然科学基金批准号:61308006、陕西自然科学基金批准号:2016JM1011和西安理工大学特色项目批准号:2015TS012资助的课题.Projects supported by the National Natural Science Foundation of China Grant No.61308006,the Natural Science Foundation of Shaanxi Province,China Grant No.2016JM1011,and Characteristic research of Xi'an University of Technology,China Grant No.2015TS012.