alleyli
花朵
共回答了12个问题采纳率:100% 举报
Urban rail transit as a major urban public transport development has been widely recognized. Expense of urban rail transit construction costs, vehicle purchase costs, operating fees, of which the vehicle acquisition costs and occupy a large proportion of operating costs, therefore, to meet the traffic demand to meet the urban development of the urban rail transport network should be the correct selection of vehicle type. Selection of urban rail transit vehicles involves not only the Vehicle Specialty itself, but also related to urban mass transit system a number of professional design, selection, and the environment, operational services and project investment has not be underestimated. Therefore, each construction of urban rail transit vehicles attach great importance to the city selection. Urban rail transit vehicles from the characteristics of the main principles of selection of vehicle. Selection of vehicles involved in the technical factors, both related to each other and constraints, the final selection result is a balanced overall coordination of the various factors results
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1年前
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