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bord and pillar mining

英 [bord and pillar mining]
美 [bord and pillar mining]

中文释义

房柱法,煤柱法

单词分析

单词结构:

bord and pillar mining

字母数:22

记忆提示

🎯 重点记忆:

  • 单词拼写:bord and pillar mining
  • 核心含义:房柱法,煤柱法

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更新时间:2026-02-04 01:11:24

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