３．１原子能院计算机网络的运行和维护宋莉华，郭红原子能院计算机网络自１９９０年开始运行以来，每年开机时间为７２００小时左右，整个网络运行良好。我院Ｉｎｔｅｍｅｔ网络也已开通。我院的计算机网是以环网为主干网、以太网为分支网的综合型网络，主干网上六台Ａｐ... 3.1 Operation and Maintenance of Computer Network at IAEA SONG Li-hua, GUO Hong Since the computer network of the IAEA started its operation in 1990, the operating time of the computer is about 7200 hours per year, and the whole network is in good condition. Intemet network in our hospital has also been opened. My hospital’s computer network is based on the ring network backbone, Ethernet network for the branch of the integrated network, the backbone of six Ap ...