time-and-frequency standard

英 [time-and-frequency standard]
美 [time-and-frequency standard]

中文释义

时[间]频[率]标准

单词分析

单词结构：

time-and-frequency standard

字母数：27

记忆提示

🎯 重点记忆：

  • 单词拼写：time-and-frequency standard
  • 核心含义：时[间]频[率]标准

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更新时间：2026-02-02 22:12:08