标题: IEC 61156-5-2012 Multicore and symmetrical pair/quad cables for digital communic [打印本页] 作者: liuxilin1215 时间: 2019-3-9 15:58:36 标题: IEC 61156-5-2012 Multicore and symmetrical pair/quad cables for digital communic
IEC 61156-5-2012 Multicore and symmetrical pair/quad cables for digital communications – Part 5: Symmetrical pair/quad cables with transmission characteristics up to 1000 MHz – Horizontal floor wiring – Sectional specification