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。

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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。

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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.

根据车间内钢梁上吊车轨道安装底板与钢梁粘接的具体要求，研制了一种中温固化双组分环氧胶粘剂。

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