This was a large scale construction project under complicated circumstances, with siting in an aseismic region of 7 degree fortification.
该工程建设规模庞大、建设条件复杂，隧址位于7度抗震设防区内。
A synthetic study of analogy has been made by using the structural factors between these structure backgrounds and 25 aseismic sub-areas selected randomly from the studied region.
并与研究区内随机挑选的25个无震子区的构造因子进行了综合类比分析。
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