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liuxilin1215 发表于 2015-7-7 21:31:53

IEC 61156-5-2-2002 Multicore and symmetrical pair/quad cables for digital commun

IEC 61156-5-2-2002 Multicore and symmetrical pair/quad cables for digital communications – Part 5-2: Symmetrical pair/quad cables with transmission characteristics up to 600 MHz – Horizontal floor wiring – Capability approval – Sectional specification

admin 发表于 2015-7-8 15:04:49

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