thin-out of coal seam

英 [thin-out of coal seam]
美 [thin-out of coal seam]

中文释义

煤层尖灭

单词分析

单词结构：

thin-out of coal seam

字母数：21

记忆提示

🎯 重点记忆：

  • 单词拼写：thin-out of coal seam
  • 核心含义：煤层尖灭

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更新时间：2026-02-24 03:06:43