To intensify basic external insulation level of power system-fundamental way for prevention of large-scale pollution flashover.
防止大面积污闪的根本出路是提高电网的基本外绝缘水平。
The basic measure to protect from large area pollutant flashover is to increase overall external insulation level for transmission and substation equipment.
防治电网大面积污闪的根本出路是提高输变电设备外绝缘的总体水平。
So some developed countries with external thermal insulation layer flat, and allowed to use iron float shall be used to beat, can only use wood float shall be used to rub pressure level off.
因此一些发达国家外保温面层抹平，不允许用铁抹子拍打，只能用木抹子搓压平整。
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