up and down propagation time

英 [up and down propagation time]
美 [up and down propagation time]

中文释义

上行下行传播时间

单词分析

单词结构：

up and down propagation time

字母数：28

记忆提示

🎯 重点记忆：

  • 单词拼写：up and down propagation time
  • 核心含义：上行下行传播时间

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更新时间：2026-04-01 21:34:38