This Standard specifies the technical requirements,inspection methods and rules for laying ofhigh-speed turnouts for ballasted track.This Standard is applicable to the laying of turnouts for ballasted track on the main line of high-speed railways that ope (共 304 字) [阅读本文] >>


说明: 本文档由创作者上传发布,版权归属创作者。若内容存在侵权,请点击