焊接轨道已开始代替有接头的轨道。所有这些技术使火车的速度更快，行驶更平稳。

焊接轨道已开始代替有接头的轨道。所有这些技术使火车的速度更快，行驶更平稳。的英文翻译

基本释义

• And welded rails have begun to replace jointed rail. all these developments permit higher speeds and a smoother ride.