high-face room-and-pillar mining

[high-face room-and-pillar mining]
[high-face room-and-pillar mining]

中文释义

高工作面房柱式开采

单词分析

单词结构:

high-face room-and-pillar mining

字母数:32

记忆提示

🎯 重点记忆:

  • 单词拼写:high-face room-and-pillar mining
  • 核心含义:高工作面房柱式开采