基金Supported by the NNSF of China(10826059,10901092)the NSF of Shandong Province of China (Q2007A05)the China Postdoctoral Science Foundation and the Scientific Research Start-up Foundation of QFNU(BSQD07028)
基金supported by the NNSF of China (10826059,10901092)the NSF of Shandong Province of China (Q2007A05)the China Postdoctoral Science Foundation(20090451292)