阐述了交通运输需求与供给行为的理论，并研究了交通运输结构系统和数学模型。
The supply and demand of traffic volume are discussed, some problems of transportation system and their mathematic models are studied.
交通运输业的影响因素很多，其中的一个重要因素就是产业结构。
There are a lot of factors that effect transport, one of which is industrial structure.
着力解决交通运输“卡脖子”路段，进一步优化能源结构。
We will work hard to resolve transportation bottlenecks and continue to upgrade energy structure.
运用系统科学和系统工程的理论与方法介绍了交通运输系统工程的特点、功能和结构。
Applying the theory and methods of system science and system engineering, this paper introduces the characteristics, functions and structure of traffic and transport system engineering.
交通运输业是整个国民经济结构中一个重要部门，在综合运输系统中发挥着巨大的作用。
The transportation is an important department in the whole national economy framework, which develop the enormous function in synthetically transportation system.
桥梁是交通运输系统中的重要组成部分，确保桥梁结构的安全性就显得极其重要。
Bridge is an important part of the transport system, ensuring the safety of bridge structures is extremely important.
它不仅能够封冻港口、堵塞航道、中断交通运输，而且还能破坏港工设施，撞毁海上过往船只及海上结构物。
Not only can it freeze the port, block the sea channel, break off the transportation, it also can destroy the port installations and crash out ships.
发达的交通运输业对于产业结构的协调、国民经济的良性运行有巨大的促进作用。
Developed transportation takes a good effect on the coordination of industry structure and national economy.
城市轨道交通作为一种大容量、快速、准时的交通运输方式，不但缓解了城市交通的压力，还促进了整个大都市区结构的形成。
Because of its big capacity, speed, and punctuality, the railway not only relieves the stress of urban traffic, but also pushes the formation of the whole big metropolis structure.
在我国交通运输需求结构分析部分中，包括三方面内容：分析消费者心理，了解运输需求者的选择机理；
The other one is the structure researching, which also includes three parts: studying the expense psychology of the customers to analyze the principle of customer's choice;
在我国交通运输需求结构分析部分中，包括三方面内容：分析消费者心理，了解运输需求者的选择机理；
The other one is the structure researching, which also includes three parts: studying the expense psychology of the customers to analyze the principle of customer's choice;
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