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专家的研究表明,资本投入对西北地区经济增长的作用最小,而对知识、教育、计划生育、通讯和基础设施投资的增长作用最为明显。
Research by experts shows that capital investment has the least effect on economic growth in Northwest China and has the most obvious effect on the growth of knowledge, education, family planning, communications and infrastructure investment.