echelon maintenance

英 [echelon maintenance]
美 [echelon maintenance]

中文释义

分级[梯队]维修

单词分析

单词结构：

echelon maintenance

字母数：19

记忆提示

🎯 重点记忆：

  • 单词拼写：echelon maintenance
  • 核心含义：分级[梯队]维修

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更新时间：2026-02-01 03:03:25