JUS N C5 250-1980 Electric power and lighting Selfsupporting cable bunch cross-Unked polvethilene insulated fbr rated voltages up to 0 6 1 k V《供电和照明-自承式电缆束，交联聚乙烯电缆绝缘，额定电压高达0 6 1kV》.pdf

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