度地震
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7 degree earthquake
7级地震
以上为机器翻译结果，长、整句建议使用 人工翻译 。
On the other hand, the results of nonlinear earthquake time history analysis show that the base isolation system effects are very well, so the intensity can be reduced from 9 degree to 7 degree.
其次，通过非线性地震反应时程分析，证明隔震效果十分明显，该科技楼的设防烈度可由9度降为7度。
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