third rail
复数形式
third rails
1
第三轨, 为列车提供电力的附加轨道
an additional rail providing electric power to trains, often used in subway systems
A third rail is an additional rail, placed beside the regular tracks, that supplies electrical power to trains. Instead of using overhead wires, trains draw power from the third rail through a special device called a shoe, which touches the rail and transfers electricity. This system is commonly used in subways, urban transit, and other rail systems where overhead wires might not be practical. The third rail is typically located close to the ground and is carefully insulated for safety to prevent accidents.
- The subway train drew power from the third rail.
地铁列车从第三轨获取电力。
- They installed a new third rail for the metro extension.
他们为地铁延伸安装了一条新的第三轨。
- The third rail ran alongside the regular tracks.
第三轨与常规轨道并排运行。
- The third rail system improved train efficiency.
第三轨系统提高了火车效率。
- She was warned to stay clear of the electrified third rail.
她被警告要远离带电的第三轨。