ring down system signaling equipment

[ring down system signaling equipment]
[ring down system signaling equipment]

中文释义

振铃制信号设备

单词分析

单词结构:

ring down system signaling equipment

字母数:36

记忆提示

🎯 重点记忆:

  • 单词拼写:ring down system signaling equipment
  • 核心含义:振铃制信号设备