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阐明由美国企业、政府和研究机构联手执行的一项“铁矿石合作研究计划”的主要成果。这种通过联合技术攻关以改造旧矿山、增强竞争力的尝试是值得借鉴的。
Clarify the key findings of an Iron Ore Collaboration Research Program jointly implemented by US businesses, governments and research institutes. Attempts to improve the competitiveness of the old mines through joint technology research are worth learning from.