In the United States, pedestrian pathways or bicycle trails are sometimes located along with existing rail corridors.
在美国，人行道与自行车道有时会沿着现有的铁路轨道。
The utility model saves raw materials and processing costs compared with the existing rail distance rod.
较现有的轨距杆节约原材料及加工成本。
Therefore, it is necessary to research a new technique to improve the existing rail traffic data platform.
因此有必要引入新的技术手段对现有的轨道交通基础数据平台进行改进。
Improving our existing rail lines, to make current train service faster, but also identifying potential corridors for the creation of world-class high-speed rail.
既要改善我们现存的铁路线，使目前的列车服务更加快捷；也要确定建成世界一流的高速铁路的潜在通道。
By means of the finite element theory, the inherent frequencies and vibration characteristics for existing rail line under different supporting conditions are analyzed.
运用有限元理论，分析了既有线路在不同支承条件下的固有频率和固有振动特性。
Based on the analysis of existing rail profiling techniques, this thesis proposes the overall structure and implementation method for the high-speed kinematical detection system of rail profile.
本论文在分析国内外钢轨断面检测技术的基础上，提出了钢轨断面高精度动态检测系统的整体结构和实现方法。
Based on the analysis of existing rail profiling techniques, this thesis proposes the overall structure and implementation method for the high-speed kinematical detection system of rail profile.
本论文在分析国内外钢轨断面检测技术的基础上，提出了钢轨断面高精度动态检测系统的整体结构和实现方法。
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