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关注：1
2013-05-23 12:21
求翻译：故频频发生。自从采用新奥法、喷射混凝土和钢拱架是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
故频频发生。自从采用新奥法、喷射混凝土和钢拱架
问题补充： |
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2013-05-23 12:21:38
Therefore, frequently occur. Since the adoption of the New Austrian Tunneling Method, sprayed concrete and steel arch
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2013-05-23 12:23:18
It occurs frequently. Since introduction of the new O'Farrell, a jet spray concrete and steel arch structure
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2013-05-23 12:24:58
Therefore occurs repeatedly.Since uses the new Austria law, the shotcrete and the steel centering
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2013-05-23 12:26:38
So frequent. Since the introduction of the new Austrian method, shotcrete and steel arch
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2013-05-23 12:28:18
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