triple-heading room-and-pillar mining

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

中文释义

三平巷房柱采矿法

单词分析

单词结构：

triple-heading room-and-pillar mining

字母数：37

记忆提示

🎯 重点记忆：

  • 单词拼写：triple-heading room-and-pillar mining
  • 核心含义：三平巷房柱采矿法

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更新时间：2026-02-21 00:00:59