primary atomic clock

英 [primary atomic clock]
美 [primary atomic clock]

中文释义

原级原子钟

单词分析

单词结构：

primary atomic clock

字母数：20

记忆提示

🎯 重点记忆：

  • 单词拼写：primary atomic clock
  • 核心含义：原级原子钟

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更新时间：2026-03-12 01:49:01