肖斌答读者问山东诸城市第四中学读者刘如奎希望了解现代通信业特别是移动通信方面的情况,现推荐此文。人类为了交往需要,早在史前时期便开始了通信活动。但是由于低下的生产动是不方便的.因此,世界各民力水平,在漫长的人类发 Xiao Bin Ansar Reader asked Liu Rukui, a fourth-grade middle school student in Zhucheng, Shandong, to read the article about the modern communications industry, especially mobile communications. In order to meet the needs of mankind, as early as prehistoric period began communication activities. However, due to the low production of moving is inconvenient.Therefore, the level of the world’s people, in the long human hair