宁夏呼鲁斯太矿区5#煤层粘土岩夹矸的研究

宁夏呼鲁斯太矿区5#煤层粘土岩夹矸的研究的英文翻译

基本释义

• Study on gangue of tonstein within No.5 Coal-bed in Hulstai coal district, Ningxia