本文着重计算和分析了刚性基础上的内浮顶油罐的固有频率、振型和水平地面加速度作用下的动力响应。
The natural frequency and mode of the oil storage tank with an in-floating roof supported on the ground are calculated, and its dynamic response to the horizontal earthquake motion is analyzed.
名单中所列出的19座大坝被水平地面加速度峰值大于0.3 g的地震震毁，其中包括原来所列名单中的5座大坝。
Now 19 DAMS are listed in table 1 that were shaken by peak horizontal ground accelerations (PHGA) greater than 0.3g. The new list includes five DAMS from the original table.
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