The elephant-food buckling(EFB) is one of the main destruction phenomenon of large cylindrical liquid storage tanks during earthquake, which occurs on the shell near the tank base zone.
“象足”屈曲现象是大型钢制立式储液罐地震破坏的主要形式之一，它发生在靠近底部的壁板区域。
The functional location of Chengdu-Chongqing Economic Zone is "One Pole. Five Base, One Barrier ", they are new national Growth Pole .
成渝经济区功能定位为“一极五个基地一屏障”，即：国家新经济增长极；
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