L Yang.H Okamoto.A Yokoyama.Y Sekine Expert system for fault section estimation of power system using time sequence information 1992(2-3是什么意思_L Yang.H Okamoto.A Yokoyama.Y Sekine Expert system for fault section estimation of power system using time sequence information 1992(2-3在线翻译_英语_读音_用法_例句