It is so imperative to develop full functional real-time teaching system running on the CERNET(China Education and Research Network) or CHINANET largely.

• 因此，开发能在CERNET（中国教育科研网）或CHINANET（中国公众互联网）等广域网环境下大范围运行的、功能较完备的实时教学系统，显得日益迫切。