acclivitous coal seam是什么意思，acclivitous coal seam的翻译，acclivitous coal seam音标、读音、用法和例句

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acclivitous coal seam是什么意思，acclivitous coal seam的翻译，acclivitous coal seam音标、读音、用法和例句_奇葩剧汉英词典

acclivitous coal seam

基本解释

专业释义

能源科学技术