twenty-one (21) cm radiation

英 [twenty-one (21) cm radiation]
美 [twenty-one (21) cm radiation]

中文释义

21公分辐射

单词分析

单词结构：

twenty-one (21) cm radiation

字母数：28

记忆提示

🎯 重点记忆：

  • 单词拼写：twenty-one (21) cm radiation
  • 核心含义：21公分辐射

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更新时间：2025-12-17 05:08:20