步进指数光纤缆
step index fiber optic cable
梯架式电缆桥架
steel cable ladder frames
空缆线形分析
analysis of cable shape at cable-finished stage
空缆线形计算
cable shape at cable-finished stage
开架式有缆水下机器人
remotely operated vehicles
光缆线路地标图
optical fiber cable linemap
光纤光缆测试
optical cable measurement
光纤光缆密封件
Sealing of Light cabling connector
架空线入地改造
overhead to underground conversion
架空线入地
overhead lines undergroudization
架空线路入地改造
overhead distribution power lines urderground