second category gassy mine

英 [second category gassy mine]
美 [second category gassy mine]

中文释义

二级瓦斯矿

单词分析

单词结构：

second category gassy mine

字母数：26

记忆提示

🎯 重点记忆：

  • 单词拼写：second category gassy mine
  • 核心含义：二级瓦斯矿

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更新时间：2026-02-20 21:53:29