drawing back of pillars

英 [drawing back of pillars]
美 [drawing back of pillars]

中文释义

后退式回采矿柱

单词分析

单词结构：

drawing back of pillars

字母数：23

记忆提示

🎯 重点记忆：

  • 单词拼写：drawing back of pillars
  • 核心含义： 后退式回采矿柱

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更新时间：2026-02-03 22:40:09