breast and pillar method

英 [breast and pillar method]
美 [breast and pillar method]

中文释义

房柱式采煤法

单词分析

单词结构：

breast and pillar method

字母数：24

记忆提示

🎯 重点记忆：

  • 单词拼写：breast and pillar method
  • 核心含义： 房柱式采煤法

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更新时间：2025-12-07 10:31:46