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[国外标准] BS 7870-4.20-2011 A1-2016 LV and MV?polymeric insulated cables for use by distribution and generation utilities

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P:2024-08-14 16:51:09

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BS 7870-4.20-2011A1-2016.pdf

BS 7870-4.20-2011+A1-2016 LV and MV polymeric insulated cables for use by distribution and generation utilities.pdf

longitudinally watertight design - 纵向防水设计,纵向防水结构(通信电缆的) （0） 投诉

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