train plans的用法和樣例：
例句
- The paper analyzed the characteristics of train plans on the passenger traffic special line and gave a method to make and optimize train plans by recombining passenger flows.
摘要通過(guò)分析客運專(zhuān)線(xiàn)列車(chē)開(kāi)行方案的特性及其確定過(guò)程，提出了通過(guò)車(chē)流合并來(lái)確定和優(yōu)化列車(chē)開(kāi)行方案的方法。
