secondary return air

英 [secondary return air]
美 [secondary return air]

中文释义

次回风

单词分析

单词结构：

secondary return air

字母数：20

记忆提示

🎯 重点记忆：

  • 单词拼写：secondary return air
  • 核心含义：次回风

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更新时间：2026-01-31 21:50:58