The running safety of line was threatened by insulator sleet covering flashover derault of line at the late of 1998.
1998年底阳泉地区发生线路绝缘子覆冰闪络故障，对线路安全运行造成了威胁。
The running safety of line was threatened by insulator sleet covering flashover derault of line at the late of 1998.
1998年底阳泉地区发生线路绝缘子覆冰闪络故障，对线路安全运行造成了威胁。
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