medium-thickness coal seam

[medium-thickness coal seam]
[medium-thickness coal seam]

中文释义

中厚煤层

单词分析

单词结构:

medium-thickness coal seam

字母数:26

记忆提示

🎯 重点记忆:

  • 单词拼写:medium-thickness coal seam
  • 核心含义:中厚煤层