classes of exchange

英 [classes of exchange]
美 [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

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更新时间：2026-03-10 08:38:53