世界上各国研究与开发(R&D)费用的投入差异很多。这里举一些国家为例:研究与开发费用投入最高的国家为瑞典,其研究与开发费用约占国内生产总值的4．3％,最低的为波兰,仅占0．6％。所占费用介于3％-3．5％的国家有芬兰、日本,所占费用介于2．5％-3％的国家有美国、瑞士、丹 There are many differences in the costs of research and development (R & D) in various countries in the world. Here are some countries, for example: the highest cost of research and development investment in Sweden, its research and development costs about 4.3% of GDP, the lowest for Poland, only 0.6%. The countries accounting for 3% -3.5% of the total cost are Finland and Japan. The countries accounting for 2.5% -3% of the total cost are the United States, Switzerland, Denmark