two-way ring down trunk circuit

英 [two-way ring down trunk circuit]
美 [two-way ring down trunk circuit]

中文释义

双向振铃中继电路

单词分析

单词结构：

two-way ring down trunk circuit

字母数：31

记忆提示

🎯 重点记忆：

  • 单词拼写：two-way ring down trunk circuit
  • 核心含义：双向振铃中继电路

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更新时间：2026-03-24 08:46:05