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１９９０年世界信息市场销售总额比例各国在世界信息市场销售额中所占的份额，反映了各国信息产业发达程度的差别。一些发达国家在１９９０年世界信息市场销售总额的比例为：美国３４％；日本１９％；德国７％；法国６％，英国６％；意大利４％。（乌家培。努力开发信息资...
Proportion of total sales in the world information market in 1990 The share of countries in the sales of information in the world market reflects the differences in the level of developed countries in the information industry. The share of total sales of some developed countries in the world information market in 1990 was 34% in the United States, 19% in Japan, 7% in Germany, 6% in France, 6% in the United Kingdom and 4% in Italy. (Wu Jiapei. Strive to develop information ...