deliver lines with traction engine 机械牵引放线
Electric traction overhead lines 电力牵引架空线路
Electric traction overhead contact lines 电气牵引架空接触线
The two rails are not only signal lines of track circuits, but also loop current line of locomotive traction current in electrified railway block.
电力牵引区段的两条钢轨，既作为轨道电路的通道来传输信号电流，又作为牵引电流的回路来传送牵引电流。
Railway applications - Fixed installations - Electric traction overhead contact lines.
铁路设施。固定装置。电气牵引架空接触线。
Briefly introduces the basic principles for at post differential current protection of traction power supply system in Shijiazhuang-Taiyuan passenger dedicated lines.
对石太客运专线牵引供电系统AT所差动电流保护的基本原理进行了简要介绍。
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