density of coal seam

英 [density of coal seam]
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中文释义

煤层密度

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单词结构：

density of coal seam

字母数：20

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🎯 重点记忆：

  • 单词拼写：density of coal seam
  • 核心含义：煤层密度

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更新时间：2025-12-22 06:49:44