vacuum tube hearing aid

英 [vacuum tube hearing aid]
美 [vacuum tube hearing aid]

中文释义

真空管助听器

单词分析

单词结构：

vacuum tube hearing aid

字母数：23

记忆提示

🎯 重点记忆：

  • 单词拼写：vacuum tube hearing aid
  • 核心含义：真空管助听器

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更新时间：2026-04-13 20:50:14