back-up valve

英 [back-up valve]
美 [back-up valve]

中文释义

[机] 升压阀

单词分析

单词结构：

back-up valve

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：back-up valve
  • 核心含义：[机] 升压阀

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更新时间：2026-02-20 15:30:09