arched roof in advance of wall tunneling method

[arched roof in advance of wall tunneling method]
[arched roof in advance of wall tunneling method]

中文释义

先拱后墙法

单词分析

单词结构:

arched roof in advance of wall tunneling method

字母数:47

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🎯 重点记忆:

  • 单词拼写:arched roof in advance of wall tunneling method
  • 核心含义:先拱后墙法