电线电缆网 > 标准共享 > IEC 61156-4-2009 Multicore and symmetrical pair/quad cables for digital communications – Part 4（完整版）
IEC 61156-4-2009 Multicore and symmetrical pair/quad cables for digital communications – Part 4 - 无图版
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IEC 61156-4-2009 Multicore and symmetrical pair/quad cables for digital communications – Part 4: Riser cables-Sectional specification.pdf