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2.2.1腕臂的分类Cantileverassembly File Type：mp4
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2.1.2支柱按用途分类2-1-2MastofOCS File Type：mp4
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2.1.1支柱按材质分类2-1-1MastofOCS File Type：mp4
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片段6AT供电方式的应用Applicationoffeedingsystemwithauto-transformers File Type：mp4
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片段65跨绝缘锚段关节5spanInsulatedoverlap File Type：mp4
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1.5.2牵引供电系统供电方式1-5-2Feedingsystem File Type：mp4
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片段62跨中心锚结2spanmidpointanchor File Type：mp4
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片段5氧化锌避雷器的外部结构Externalstructureofzincoxidearrester File Type：mp4
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片段5上、下部固定绳松驰、受力不均调整whentheupperandlowerfixed.r.o.pesarelooseorunevenlystressed File Type：mp4
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