urban-rail transit的用法和樣例：
例句
- Traction calculation of trains is one the important composing of the whole urban rail traffic.
列車牽引計算是整個城市軌道交通的重要組成部分。 - Based on the study and experiences gained from urban metro and rail transit AFC systems, some basic design ideas of the future Maglev AFC system are described in this paper.
基於目前上海磁浮交通系統，結合城市軌道交通自動售檢票系統和鐵路售票系統的經驗，提出磁浮交通售檢票系統設計的一些基本思想和實施方案。
