pillar and stall mining

英 [pillar and stall mining]
美 [pillar and stall mining]

中文释义

房柱法;煤柱法

单词分析

单词结构：

pillar and stall mining

字母数：23

记忆提示

🎯 重点记忆：

  • 单词拼写：pillar and stall mining
  • 核心含义：房柱法;煤柱法

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更新时间：2026-03-19 22:35:03