shaft signalling

英 [shaft signalling]
美 [shaft signalling]

中文释义

直井信号

单词分析

单词结构：

shaft signalling

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：shaft signalling
  • 核心含义：直井信号

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更新时间：2025-12-31 06:02:22