ribbed coal seam

[ribbed coal seam]
[ribbed coal seam]

中文释义

夹页岩煤层

单词分析

单词结构:

ribbed coal seam

字母数:16

记忆提示

🎯 重点记忆:

  • 单词拼写:ribbed coal seam
  • 核心含义:夹页岩煤层