bord and pillar mining

英 [bord and pillar mining]
美 [bord and pillar mining]

中文释义

房柱法，煤柱法

单词分析

单词结构：

bord and pillar mining

字母数：22

记忆提示

🎯 重点记忆：

  • 单词拼写：bord and pillar mining
  • 核心含义：房柱法，煤柱法

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更新时间：2026-02-03 02:44:03