1. School of Chemistry and Chemical Engineering, Beifang Univ. of Nationalities, No. 204 Wenchang, North St., Xixia District 750021, Yinchuan, Ningxia, China
2. School of Electromechanical Engineering, Beifang Univ. of Nationalities, No. 204 Wenchang, North St., Xixia District 750021, Yinchuan, Ningxia, China (Corresponding author), zdlsir@163.com
3. State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi’an Jiaotong Univ., 28 West Xianning Rd., 710049, Xi’an, China