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移动通信的建设和发展¥邮电部科技司技术发展处@张新生移动通信的建设和发展邮电部科技司技术发展处处长张新生我国从1987年开始使用移动通信电话网,到1997年,用户数增幅为年均150%,到1997年底,用户数达到1300万户以上,移动通信用户数仅次于美国、日...
Construction and development of mobile communications Ministry of Posts and Telecommunications Ministry of Science and Technology Division of Technology Development @ Zhang Xinsheng mobile communications construction and development Ministry of Posts and Telecommunications Division Technology Development Division Director Zhang Xinsheng China began in 1987 using mobile communications network, to 1997, the increase in the number of users An average annual rate of 150%. By the end of 1997, the number of users reached more than 13 million and the number of mobile communications users was second only to the United States, Japan.