scrap steel processing and disposal
废钢加工和处理Scrap steel processing and disposal 高铝矾土、硬质粘土矿开采及熟料生产Mining of high-alumina bauxite and hard clay ore， and production of chamotte ..
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scrap steel processing and disposal
废钢加工处置
以上为机器翻译结果，长、整句建议使用 人工翻译 。