J4 ›› 2010, Vol. 23 ›› Issue (3): 87-91.

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 XU Liang-Jie1, QIAO Xi2, ZHANG Xu-Feng2, DENG Nan2   

  • Received:2010-04-15 Online:2010-06-20 Published:2010-06-20

CLC Number: 

  • U468.3