open and shut valve

英 [open and shut valve]
美 [open and shut valve]

中文释义

双位开关;双效开关

单词分析

单词结构：

open and shut valve

字母数：19

记忆提示

🎯 重点记忆：

  • 单词拼写：open and shut valve
  • 核心含义：双位开关;双效开关

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更新时间：2026-02-02 05:57:07