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关注：1
2013-05-23 12:21
求翻译：隧道施工采用上下台阶法，支护采用复合式衬砌，即初期支护和二次衬砌相结合的形式。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
隧道施工采用上下台阶法，支护采用复合式衬砌，即初期支护和二次衬砌相结合的形式。
问题补充： |
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2013-05-23 12:21:38
Tunneling up and down stairs, supporting composite lining, combination in the form of initial support and secondary lining.
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2013-05-23 12:23:18
In tunnel construction up and down stairs, and with the support composite lining, that is the support early lining and 2 times the combined form.
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2013-05-23 12:24:58
About the tunnel construction uses the terrace cultivation, the supports and protections uses the compound expression lining work, namely the initial period supports and protections and two lining works unify form.
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2013-05-23 12:26:38
Next step method in tunnel construction, support composite lining, that early support and combined forms of secondary lining.
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2013-05-23 12:28:18
正在翻译，请等待...
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