voice frequency signalling current

[voice frequency signalling current]
[voice frequency signalling current]

中文释义

音频振铃电流

单词分析

单词结构:

voice frequency signalling current

字母数:34

记忆提示

🎯 重点记忆:

  • 单词拼写:voice frequency signalling current
  • 核心含义:音频振铃电流