ballast bed

常见例句

Road bed is the subgrade on which are laid the ballast, ties and rails.
路基就是上面铺着道渣，枕轨和钢轨的底基。
In this paper, aiming at the characteristics of urban track traffic, research has been done mainly on support spacing of rail on integrated ballast bed of viaduct.
因此本文针对城市轨道交通的特点，着重对高架桥上整体道床的钢轨支承间距进行研究，计算分析了不同轨枕间距对轨道结构力学特性的影响。
In this paper, the some types of ballast bed and ballastless bed of under-rail foundation for the urban elevated rail transit are described, and their applicable scopes are also explored.
本文介绍了城市高架轨道交通轨下基础中的有碴道床和无道碴床等几种型式，并对其适用范围进行了探讨。