down-the-hole shaftboring machine

英 [down-the-hole shaftboring machine]
美 [down-the-hole shaftboring machine]

中文释义

井筒掘进机

单词分析

单词结构：

down-the-hole shaftboring machine

字母数：33

记忆提示

🎯 重点记忆：

  • 单词拼写：down-the-hole shaftboring machine
  • 核心含义：井筒掘进机

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更新时间：2026-04-10 20:24:55