This paper analyzes the influencing factors for metro train routing and presents the calculation formula on minimum quantity of required train sets for any routing.
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2. 机车交路系统是全路列车运行图系统的三大系统之一，为全路列车运行动力组织工作提供基础。
As one of the three major systems for train operating-diagram, locomotive working system offers basic motive force for organization work of train operation.
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3. 论文组织如下：第一章主要介绍了当前国内对机车交路系统的研究和应用现状，以及本论文的研究意义。
The thesis is organized as follows: Chapter one introduces the current situation of the domestic research on locomotive working system, and the significances of the present study.
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4. 根据乘务值乘计划问题的特性，提出等价交路组合的概念，并基于等价交路组合设计了启发式求解方法。
According to the speciality of crew rostering problem, this paper proposed the concept of equal combination of crew pairing and based this concept proposes heuristic algorithm.
In this paper, proposed a set of crossing programs based on the capacity of metro trains according to the actual situation of Beijing metro lines and passengers.
The multi-routing mode can satisfy the passenger demand and is more convenient for traveling; at the same time, it has adverse influence on the use of the carrying capacity and rolling-stock.
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7. 在交这篇论文之前，我走过了很长的路，克服了很多困难。
I have walked a long way and overcome so many difficulties before handing in this thesis.
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8. 但和奥巴马类似，一路上社交网站同样也引起了巨大的期望，现在它们必须交答卷了。
But like Mr Obama, social networks have also generated great expectations along the way on which they must now deliver.
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9. 心无交规，路有坎坷。
The road is rocky heart without shame.
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10. 讨论了最长路的交及性质。
The intersection of the longest paths is discussed.
CCCC First Highway Consultants Co. , LTD. JTG/T J23—2008 Technical specifications for strengthening construction of highway bridges [S]. Beijing:China Communications Press, 2008. (in Chinese)
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13. 中交第二公路勘察设计研究院有限公司；
Wuhan University of Technology, Wuhan, 4300704. China Communications Second Highway Survey Design and Research Institute Co. Ltd.
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14. 中交第二公路勘察设计研究院有限公司；
Wuhan University of Technology, Wuhan, 4300704. China Communications Second Highway Survey Design and Research Institute Co. Ltd.
