signal for shunting forward and backward

[signal for shunting forward and backward]
[signal for shunting forward and backward]

中文释义

双面调车信号机

单词分析

单词结构:

signal for shunting forward and backward

字母数:40

记忆提示

🎯 重点记忆:

  • 单词拼写:signal for shunting forward and backward
  • 核心含义:双面调车信号机