adjustable track gauge

例句：

1. 1. This adjustable track gauge is perfect for measuring the length of a rail.
   这个可调节的轨道量规非常适合测量铁轨的长度。
2. 2. The engineer used this adjustable track gauge to adjust the angle of the tracks.
   工程师使用这个可调节的轨道量规来调整轨道的角度。
3. 3. The adjustable track gauge was essential for ensuring safe operation of the railway system.
   这个可调节的轨道量规对于确保铁路系统的安全运行至关重要。