放置在市话局的设备，对市话局的线路进行线路交叉测试和对地测试。
Equipment located in a Central office which sequentially tests lines in the office for battery crosses and grounds.
解决了单电源和多电源网络规划、线路交叉点及线路导线截面选择等问题。
Accordingly, such problems as single power source and multi-power resources network planning, path connection nodes and path wire section are resolved.
介绍了株六复线改造因线路拨移、线路交叉换侧、桥梁铺架、车站封闭等引起接触网施工方案的过渡。
Introduces OCS construction transitional plan such as railway line-moving, line-crossing and side-exchanging, bridge and track laying, station closing up etc. on Zhuzhou-Liupanshui double track lines.
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