room-and-pillar mining

英 [room-and-pillar mining]
美 [room-and-pillar mining]

中文释义

un. 房柱法开采 [网络] 房柱式采煤法；房柱式开采

单词分析

单词结构：

room-and-pillar mining

字母数：22

记忆提示

🎯 重点记忆：

  • 单词拼写：room-and-pillar mining
  • 核心含义：un. 房柱法开采 [网络] 房柱式采煤法；房柱式开采
  • 相关含义：房柱式开采

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更新时间：2026-02-03 03:57:21