ultra-low frequency (ulf)

英 [ultra-low frequency (ulf)]
美 [ultra-low frequency (ulf)]

中文释义

超低频

单词分析

单词结构：

ultra-low frequency (ulf)

字母数：25

记忆提示

🎯 重点记忆：

  • 单词拼写：ultra-low frequency (ulf)
  • 核心含义：超低频

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更新时间：2026-02-21 20:56:54