作者机构:[1]Key Laboratory of Bionic Engineering ( Ministry of Education, China), Jilin University, Changchun 130022, P. R. China, [2]Department of Meckanical and Electronic Engineering, Zhuhai College, Jilin University, Guangdong 519041, P. R. China
相关基金:Acknowledgement This work was supported by the National Natural Science Foundation (Grant No. 50635030).