1.
Research on Rational Division of Dedicated Passenger Line and Conventional Railway
客运专线与既有线合理分工问题研究
2.
Research on the Speed Matching of Passenger/Freight Trains on Existing Liens with Max. Speed of 200km/h
200km/h既有线客货列车速度匹配研究
3.
Analysis on the Safe Construction Technique Adopted by the Engineering Adjacent to Existing Railway Lines
浅析临近铁路既有线的安全施工技术
4.
Mechanized track laying in parallel with the adjacent existing railway line
既有线增建二线小间距并行地段的机械化铺轨
5.
Mechanical Simulation and Analysis of Metro Station on the New Line Cross the Existing;
地铁新线车站穿越既有线车站的施工力学分析
6.
Study on the Problem of Choosing the Joint-Point between Dedicated Passenger Railway and Existing Railway Line;
客运专线与既有线衔接点的选择问题研究
7.
Technique and cost exploration of second line beam erection by making use of the existing line;
利用既有线架设二线梁的架设技术与造价探讨
8.
Considerations of cost compilation in double-track railway projects and tunnel strengthening projects of existing railway
增建二线及既有线隧道加固工程的造价编制
9.
On application of blasting control of interference stonework in existing wires of double line project
既有线干扰石方控制爆破在复线施工中的应用
10.
Reinforcement method and check calculation of line in the jointing in length construction of existing bridge and culvert
既有线桥涵接长施工中线路的加固方法及检算
11.
Model and Algorithm of Limited Investment for Existing Lines Reconstruction on Railway Network;
路网既有线改造有限投资模型及其算法
12.
Dynamic Performance of Rectilinear Segment in Existed Railway Line with Combined Trucks at Speed of 200 km/h
既有线200 km/h提速客货共线直线段轨道的动力特性
13.
Economic comparison and design optimization of aged bridge renovation schemes for existing track lines
既有线改造老龄桥方案的经济比选和优化设计
14.
Research of Interaction between the Subgrade Bed and the Ballast Bed on Existing Speed-Raising Railways;
既有线提速基床与道床相互影响的研究
15.
Study on Economic Evaluation Method of Existing Railways Speed-up;
针对铁路既有线提速经济评价方法的研究
16.
Research on Uniformity Stiffness of Road-Culvert Transition Section in Raising Speed Existing Rail Line;
既有线提速路涵过渡段刚度平稳过渡研究
17.
Research on Social Benefit Evaluation of China Existing Railway Speed-up;
中国铁路既有线路提速的社会效益评价研究
18.
A line has length but neither breadth nor thickness.
线有长度，但既没有宽度，也没有厚度。