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run of mine coal seam是什么意思，run of mine coal seam的翻译，run of mine coal seam音标、读音、用法和例句_生查子网韦伯词典
生查子网韦伯词典

run of mine coal seam

R 开头单词

基本解释

  • [地球科學]原煤層

专业释义

    地球科學

  • 原煤層