shoulder of ballast bed

英 [shoulder of ballast bed]
美 [shoulder of ballast bed]

中文释义

道床碴肩

单词分析

单词结构：

shoulder of ballast bed

字母数：23

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🎯 重点记忆：

  • 单词拼写：shoulder of ballast bed
  • 核心含义：道床碴肩

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更新时间：2026-03-15 19:21:24