进入 90年代，随着科学技术的迅猛发展以及在生产中的快速应用，科学技术对世界各国国民经济的贡献率达到空前的高涨，知识作为科学技术的源泉被普遍认为是产品价值的核心要素，高知识含量的产品和服务所创造的价值在国民生产总值中所占的比重日益增大，并发展成超过传统工业经 In the 1990s, with the rapid development of science and technology and its rapid application in production, the contribution rate of science and technology to the national economy in the world has reached an all-time high. As a source of science and technology, knowledge is widely regarded as the core element of product value. The value of products and services with high intellectual content has increased in the share of GNP and developed over the traditional industries