... 直接冷却：directly cooled 直接雷击保护：direct stroke protection 直接雷击：Direct lightning stroke ...
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Study on transient characteristics of overhead transmission lines due to direct lightning stroke is significant to the development of transient based protection and its reliability improvement.
研究和识别输电线路直击雷的暂态特征对研制基于暂态量的保护及提高其可靠性都具有十分重要的意义。
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