standard shortened rail

例句：

1. 1.The railway line is standard shortened rails.
   这条铁路线是标准短钢轨。
2. 2. The engineer inspected the standard shortened rails for any damage.
   工程师检查了标准短钢轨是否有损坏。
3. 3.The new railway project will require the installation of standard shortened rails.
   新铁路项目需要安装标准短钢轨。