internal shaft

英 [internal shaft]
美 [internal shaft]

中文释义

[矿业] 暗井

单词分析

单词结构：

internal shaft

字母数：14

记忆提示

🎯 重点记忆：

  • 单词拼写：internal shaft
  • 核心含义：[矿业] 暗井

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更新时间：2025-12-13 17:48:15