single track all-relay semi-automatic block system

英 [single track all-relay semi-automatic block system]
美 [single track all-relay semi-automatic block system]

中文释义

单线继电半自动 闭塞

单词分析

单词结构：

single track all-relay semi-automatic block system

字母数：50

记忆提示

🎯 重点记忆：

  • 单词拼写：single track all-relay semi-automatic block system
  • 核心含义：单线继电半自动 闭塞

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更新时间：2025-12-19 07:12:33