Steel rail is an important component of track structure, and is also the primary infrastructure of high speed railway.
钢轨是轨道结构的重要部件，是高速铁路重要的基础设施。
2
The network planning of the urban rail transit is a sub-plan of the transport planning field, meanwhile, it is the important component of the comprehensive transport planning system.
城市轨道交通网络规划是城市交通规划领域的一个专项规划，同时也是综合交通规划体系的重要组成部分。
3
A novel two-component epoxy adhesive with high adhesive strength was developed to meet the bonding requirement of mounting plate of crane rail and steel beam in the workshop.