覆冰区划
area mapping of ice-coating
高海拔重覆冰区
high altitude heavily icing region
覆冰冰厚
thickness of ice accretion
导线覆冰
conductor icing
wire icing
line ice
conductor ice coating
Transmission line ice cover
Conductor ice coverage
Ice on Line
line regelation harm
等值覆冰厚度
equivalent icing thickness