combined surface and underground mining

英 [combined surface and underground mining]
美 [combined surface and underground mining]

中文释义

露天地下联合开 采

单词分析

单词结构：

combined surface and underground mining

字母数：39

记忆提示

🎯 重点记忆：

  • 单词拼写：combined surface and underground mining
  • 核心含义：露天地下联合开 采

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更新时间：2025-12-07 23:43:40