SFD

英 [SFD]
美 [SFD]

中文释义

abbr. Single Frequency Dialling 单频拨号

单词分析

单词结构：

SFD

字母数：3

记忆提示

🎯 重点记忆：

  • 单词拼写：SFD
  • 核心含义：abbr. Single Frequency Dialling 单频拨号

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更新时间：2026-04-10 17:29:24