“bench excavation method”的概念、定义、翻译、参考文献-科学参考

单词	bench excavation method
释义	bench excavation method Encyclopedia 工学岩石工程开挖释 bench excavation method台阶开挖法将隧道断面分成上、下两个断面分次开挖形成台阶，然后上、下断面平行推进的施工方法。简称台阶法。
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