交通运输设备 transport and communication facilities运筹学 operational research运输经济学 transportation economics铁路行车构造 organization of train operation铁路货运构造 railway freight traffic organization铁路站场及枢纽 railway yard and hinge旅客运输 passenger traffic运输市场营销 marketing on Transportation market交通运输保险 transportation security集装箱container