single track all-relay semi-automatic block system

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