nonmechanized coal mining

英 [nonmechanized coal mining]
美 [nonmechanized coal mining]

中文释义

煤矿非机采型

单词分析

单词结构：

nonmechanized coal mining

字母数：25

记忆提示

🎯 重点记忆：

  • 单词拼写：nonmechanized coal mining
  • 核心含义：煤矿非机采型

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更新时间：2026-03-21 09:13:54