private manual branch exchange

[private manual branch exchange]
[private manual branch exchange]

中文释义

[电] 专用人工交换分机

单词分析

单词结构:

private manual branch exchange

字母数:30

记忆提示

🎯 重点记忆:

  • 单词拼写:private manual branch exchange
  • 核心含义:[电] 专用人工交换分机