production preparation of coal pits

英 [production preparation of coal pits]
美 [production preparation of coal pits]

中文释义

矿井生产准备

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单词结构：

production preparation of coal pits

字母数：35

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  • 单词拼写：production preparation of coal pits
  • 核心含义：矿井生产准备

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更新时间：2026-04-13 13:05:05