four-level system

英 [four-level system]
美 [four-level system]

中文释义

[电] 四水平系统

单词分析

单词结构：

four-level system

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：four-level system
  • 核心含义：[电] 四水平系统

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更新时间：2026-01-23 06:19:24