绝缘子串元件的球窝联接尺寸 GB\T4056-2019
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20kV及以下变电所设计规范 [附条文说明] GB50053-2013
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高压直流隔离开关和接地开关 GB\T25091-2010
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通信管道与通道工程设计标准 [附条文说明] GB50373-2019
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±800kV高压直流换流站设备的绝缘配合 GB\T28541-2012
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电力工程电缆设计标准 [附条文说明] GB50217-2018
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低压无功功率补偿投切装置 GB\T29312-2012
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电梯主参数及轿厢、井道、机房的型式与尺寸第1部分：Ⅰ、Ⅱ、Ⅲ、Ⅵ类电梯 GB\T7025.1-2008
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