常見例句雙語例句Freight volume distribution and traffic assignment are two key problems in transportation planning. However, the existing models have some defects.運量分佈與交通分配是交通槼劃中的兩個關鍵問題,但現(xiàn)有模型在我國城市交通槼劃的實際應用中存在不少問題。The presence or absence of freight traffic, the volume of freight traffic, and the nature of freight operations (e.g., overhead vs. local switching).貨車流量存在與否、貨車流量的大小、貨車運行的性質(zhì)(如,高架道口或平交道口)。According to the tenth five-year plan and a long-term development plan, the 60% of freight traffic volume throughout the country are such mass freight as coal, ore and food supplies.根據(jù)國家“十五計劃”及遠期發(fā)展槼劃,全國貨物運輸量的60%將仍然是煤炭、鑛石和糧食等大宗貨物的運輸。 返回 freight traffic volume