It is difficult to maintenance the wire communication device in the pit because the ground is wet, cablecorrosion is serious and sign al is bad.
由于煤矿井下地面潮湿,电缆腐蚀严重,信号不好,有线通信装置维护困难。
2
The cable has good thermal stability, can maintain good electrical properties and flexibility in the high temperature, low temperature, corrosion.
电缆具有较好的热稳定性,能在高温、低温、腐蚀性中保持良好的电性能和柔软性,适合。
3
Metro stray current causes serious electrochemical corrosion in the metal pipelines, communication cable epidermis and rebars in concrete main structure buried underground nearby metro.