analog line switch  模拟用户接线器

bidirectional line switch ring  双向线路交换环

Board Line  板线

coaxial-line switch  同轴线开关

communication line switch  通信线路交换

DC incoming line switch  直流进线开关

Double line-line voltage control  双电压控制

dual in line switch  双集成电路

fan-tail type plunger line switch  扇尾式插棒侍线键

fin-line switch  宽带开关

in-Line Switch  条形开关

Keith’s line switch  基司侍线机

Line Switch  线路开关

line switch controller  线路开关控制器

line switch network  线路交换网络

line switch shelf  寻线机架

line-line extreme distance  线-线极限距离

line-line topological relation in traffic network  交通网络线-线拓扑关系

LSE Line Switch Equipment  线路开关设备