cover arch of tunnel

英 [cover arch of tunnel]
美 [cover arch of tunnel]

中文释义

隧道套拱

单词分析

单词结构：

cover arch of tunnel

字母数：20

记忆提示

🎯 重点记忆：

  • 单词拼写：cover arch of tunnel
  • 核心含义：隧道套拱

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更新时间：2026-02-04 13:10:18