 2011, Vol. 30 Issue (6): 1297-1297 DOI: |
|
|||
| SUN Junjie1，2 | |||
| (1. Department of Civil Engineering and Mechanics，Lanzhou University，Lanzhou，Gansu 730000，China；2. Lanzhou Institute of Seismology，China Earthquake Administration，Lanzhou，Gansu 730000，China) | |||
|
||||||||||||||||||||||||||||||||||||
