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关注：1
2013-05-23 12:21
求翻译：引起钢筋混凝土拱桥结构固有频率的降低是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
引起钢筋混凝土拱桥结构固有频率的降低
问题补充： |
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2013-05-23 12:21:38
Reinforced concrete arch bridge structure caused by the lower natural frequency
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2013-05-23 12:23:18
Arising from the lower reinforced concrete arch bridge structures inherent frequency
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2013-05-23 12:24:58
Causes reinforced concrete arched bridge structure natural frequency depression
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2013-05-23 12:26:38
Structure of reinforced concrete arch bridge natural frequency caused by reduced
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2013-05-23 12:28:18
Reinforced concrete arch bridge structure caused by the lower natural frequency
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