heading and bench tunneling method

英 [heading and bench tunneling method]
美 [heading and bench tunneling method]

中文释义

导洞与层阶法

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heading and bench tunneling method

字母数：34

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  • 单词拼写：heading and bench tunneling method
  • 核心含义：导洞与层阶法

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更新时间：2026-01-29 20:10:57