manual controlled block system

英 [manual controlled block system]
美 [manual controlled block system]

中文释义

un. 半自动闭塞系统

单词分析

单词结构：

manual controlled block system

字母数：30

记忆提示

🎯 重点记忆：

  • 单词拼写：manual controlled block system
  • 核心含义：un. 半自动闭塞系统

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更新时间：2026-01-30 04:09:24