作者: Fei Li , Zhan-Jiang Zheng , Jun-Yan Shang , Ke-Zhi Jiang , Guo-Qiao Lai
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摘要: the National Natural Science Foundation of China (Nos. 20973051 and 21173064);Program for Excellent Young Teachers in Hangzhou Normal University (HNUEYT, JTAS 2011-01-014)