【摘要】 分析了３０个国家和地区１９９３年的统计资料；发现经济越发展，信息技术开支占国内生产总值的比例越大，这个比例的统计平均值ｐ＝１－ｅ－ｘβ，此关系称为产业结构定律以此为基础预测了信息技术产业的未来趋势更多还原

【Abstract】 To analyse the statistic data of 30 countries and regions in 1993 and discover that the more developed the economy is,the bigger the proportion is for information technology to cover GDP,and this percent’s statistical value p=1-e -xβ .This relationship is called the law of industry structure.Based on this law,some predictions on the further trends of information technology industry are made.更多还原