Multicore and symmetrical pair quad cables for digital communications - part 2 : horizontal floor wiring ; sectional specification 数字通信用对绞或星绞多芯对称电缆.第2部分:水平平面布线.分规范
2.
Multicore and symmetrical pair quad cables for digital communications - part 2 - 1 : horizontal floor wiring ; blank detail specification 数字通信用对绞或星绞多芯对称电缆.第2 - 1部分:水平平面布线.空白详细规范