人们把在生产、科学研究和管理中所获得的知识、技能、经验等,用文字记载下来就成了科技文献,我们常称之为科技情报资料。当前传播科技知识的视听技术虽然有了很大的发展,但科学技术的交流,大量的仍是靠文献这种形式。科技情报资料有两类:一是自由传递的,通过索取、交换、订购等方式可以得到,称做一般科技资料;另一类是限制传递的科技文献,获得这类文献的途径是:采取间谍 People record the knowledge, skills and experience gained in production, scientific research and management as scientific and technological documents, which we often refer to as scientific intelligence materials. Although the audio-visual technology for disseminating scientific and technological knowledge has greatly developed at present, the exchange of science and technology remains largely in the form of documentation. There are two types of scientific and technological intelligence data: one is free transmission, which can be obtained by means of obtaining, exchanging and ordering, which is called general scientific and technical information; the other is scientific and technical literature that limits the transmission; the way to obtain such literature is: