随着电讯事业的迅速发展,近年来我国很多地区已埋设和使用了大量的塑料通信电缆,由于一直没有理想的测试设备,对电缆经常出现的鼠咬、雷击和其他原因造成的损伤,人们便束手无策,只得派人沿电缆路由逐 With the rapid development of telecommunications, a large number of plastic communications cables have been buried and used in many areas of our country in recent years. Because of the lack of ideal test equipment and the frequent occurrence of rat bites, lightning strikes and other causes of damage to cables, people Helpless, had to send along the cable routing by