built-up gear

英 [built-up gear]
美 [built-up gear]

中文释义

组合齿轮

单词分析

单词结构：

built-up gear

字母数：13

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🎯 重点记忆：

  • 单词拼写：built-up gear
  • 核心含义：组合齿轮

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更新时间：2026-03-20 19:31:23