该项目是由我校苗长云教授等承担的企事业委托项目 ,做为计划外重大项目于 2 0 0 0年 12月 17日通过了市科委组织的专家鉴定 .　　 DK- 2型电话线路扩容器是采用电子技术和计算机通讯技术 ,根据多信道共用原理研究而成 .实现了 1～ 2对电话线路扩容为 8个电话用户 ,从而在保证 This project was entrusted by enterprises such as Professor Chang Changyun of our school, etc. As a major project outside the program, it passed the appraisal of experts organized by the Municipal Science and Technology Commission on December 17, 2000. The DK-2 telephone line Expansion of the container is the use of electronic technology and computer communications technology, based on the theory of multi-channel shared from 1 to 2 pairs of telephone lines to achieve the expansion of 8 telephone users, thus ensuring