shaft and drift excavation

[shaft and drift excavation]
[shaft and drift excavation]

中文释义

井巷掘进

单词分析

单词结构:

shaft and drift excavation

字母数:26

记忆提示

🎯 重点记忆:

  • 单词拼写:shaft and drift excavation
  • 核心含义:井巷掘进