classification of gaseous mine

[classification of gaseous mine]
[classification of gaseous mine]

中文释义

瓦斯矿井等级

单词分析

单词结构:

classification of gaseous mine

字母数:30

记忆提示

🎯 重点记忆:

  • 单词拼写:classification of gaseous mine
  • 核心含义:瓦斯矿井等级