classes of exchange

[classes of exchange]
[classes of exchange]

中文释义

[计] 电话交换局级别

单词分析

单词结构:

classes of exchange

字母数:19

记忆提示

🎯 重点记忆:

  • 单词拼写:classes of exchange
  • 核心含义:[计] 电话交换局级别