中文说明：
现代社会发展要求通信系统功能越来越强，性能越来越高，构成越来越复杂；另一方面，要求通信系统技术研究和产品开发缩短周期，降低成本，提高水平。这样尖锐对立的两个方面的要求，只有通过使用强大的计算机辅助分析设计技术和工具才能实现
English Description：
The development of modern society requires the communication system to have stronger and stronger functions, higher and higher performance and more and more complex composition; On the other hand, communication system technology research and product development are required to shorten the cycle, reduce the cost and improve the level. Only by using powerful computer-aided analysis and design technology and tools can we realize the requirements of the two sharply opposed aspects