DL T 5231-2010 ±800kV及以下直流输电接地极施工及验收规程.pdf

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DL T 5231-2010 ±800kV及以下直流输电接地极施工及验收规程.pdf

DL T 5231-2010 Specification for construction and acceptance of nearthing pole in ±800kV & under DC transmission n《±800kV及以下直流输电接地极施工及验收规程》.pdf

DL T 5275-2012 ±800kV及以下直流输电系统接地极 施工质量检验及评定规程.pdf

DL T 5275-2012 ±800kV及以下直流输电系统接地极施工质量检验及评定规程.pdf

DL T 5275-2012 ±800kV及以下直流输电系统接地极施工质量检验及评定规程.pdf

DL T 5275-2012 Code for construction quality checkout and evaluation of earth electrode in DC transmission system at ± 800 kV and below《±800kV及以下直流输电系统接地极施工质量检验及评定规程》.pdf

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