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未来五年，通信产业将出现更大技术变化。影响最大的是五项关键技术：光传输、卫星通信、无线移动通信产品、宽带数字技术、因特网资源。一、光传输今天的通信速度是每秒１万亿比特，时间已不是人类交流的障碍。这一速率意味着，在１秒钟内，我们可以传送２０万本普通厚度的书?
The next five years, the telecommunications industry will see greater technological changes. The most important are the five key technologies: optical transmission, satellite communications, wireless mobile communications products, broadband digital technology, Internet resources. First, optical transmission Today’s communication speed is 1 trillion bits per second, time is not an obstacle to human exchange. This rate means that in one second, we can send 200,000 ordinary books of thickness?