roof control by wall-shape pillar

英 [roof control by wall-shape pillar]
美 [roof control by wall-shape pillar]

中文释义

煤柱支撑顶板法

单词分析

单词结构：

roof control by wall-shape pillar

字母数：33

记忆提示

🎯 重点记忆：

  • 单词拼写：roof control by wall-shape pillar
  • 核心含义：煤柱支撑顶板法

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更新时间：2026-03-24 07:51:38