ground coal

英 [ground coal]
美 [ground coal]

中文释义

【采矿】煤层底部煤，底煤

单词分析

单词结构：

ground coal

字母数：11

记忆提示

🎯 重点记忆：

  • 单词拼写：ground coal
  • 核心含义：【采矿】煤层底部煤，底煤

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更新时间：2026-01-12 15:54:14