preliminary vacuum

英 [preliminary vacuum]
美 [preliminary vacuum]

中文释义

初期减压

单词分析

单词结构：

preliminary vacuum

字母数：18

记忆提示

🎯 重点记忆：

  • 单词拼写：preliminary vacuum
  • 核心含义：初期减压

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更新时间：2026-01-30 04:55:23