shaft signaling

英 [shaft signaling]
美 [shaft signaling]

中文释义

矿井提升信号

单词分析

单词结构：

shaft signaling

字母数：15

记忆提示

🎯 重点记忆：

  • 单词拼写：shaft signaling
  • 核心含义：矿井提升信号

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更新时间：2026-03-16 03:45:09