modified study on marginal strategy of activities in pre-phase of npp projectli xiao-bing,li yun-yi(...ltd., beijing 100840, china)abstract:based on the method of model analysis, this paper builds the marginal
图 3 雷击杆塔电气设备最大过电压fig. 3 largest overvoltage of electrical equipment for tower struck by lightning由图3可见...高电压技术, 2008, 34(2): 215-219.hu yi. analysis and ermeasures discussion for large area icing accident on