命名代号 煤矿用通信电缆 ................................... MH 铜质线芯.............................................. 省略 聚乙烯绝缘 ........................................... Y 铝一聚乙烯粘结护套.................................... A 聚乙烯内护套 ......................................... 省略 编织铠装.............................................. B 聚氯乙烯护套 ........................................ V 细圆钢丝铠装、聚氯乙烯外被层..........................32 |