sub-rail track bed

英 [sub-rail track bed]
美 [sub-rail track bed]

中文释义

轨下基础

单词分析

单词结构：

sub-rail track bed

字母数：18

记忆提示

🎯 重点记忆：

  • 单词拼写：sub-rail track bed
  • 核心含义：轨下基础

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更新时间：2026-01-31 08:56:27