要振兴机械、汽车工业，引进和利用外资进行技术改造是一种手段。但是，在这个问题上，要掌握几条原则：一是要区别不同类别的产品采取不同的开放度。对于国内外差距大，靠自己力量短期内难以突破的产品，如燃气轮机、核电～回路设备、复印机等，在政策掌握上可以放松一点，不? To revitalize the machinery and automobile industry, the introduction and use of foreign capital for technological transformation is a means. However, on this issue, we must grasp several principles: First, we must adopt different degrees of openness to distinguish different types of products. For products with large gaps between home and abroad and difficult to break through in the short term, such as gas turbines, nuclear power, loop equipment, copiers, etc., you can relax in policy control.