primary cesium beam frequency standard

英 [primary cesium beam frequency standard]
美 [primary cesium beam frequency standard]

中文释义

原级铯射束频率标准

单词分析

单词结构：

primary cesium beam frequency standard

字母数：38

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🎯 重点记忆：

  • 单词拼写：primary cesium beam frequency standard
  • 核心含义：原级铯射束频率标准

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更新时间：2026-02-02 20:37:23