Long rails in jointless track are usually made on welded rail site or in railway welded rail factory.

无缝线路长钢轨通常由铁路焊轨厂或现场焊轨基地焊接。

youdao

Long rails in jointless track are usually made on welded rail site or in railway welded rail factory.

无缝线路长钢轨通常由铁路焊轨厂或现场焊轨基地焊接。

youdao