铁路长期里在提供车辆顾主的需求上受到限制,顾主需要运输大的各种各样的货物,或用棚车或用敞车。而现在主要货车种类是用敞车、平车和棚车。当装载尺寸或搬运条件不可能使用棚车,而又要在遇到坏天气的条件下保护货物的时候,解决的办法是使用平车或敞车,上面盖上篷 Railways are limited in their long-term need to provide car buyers, who need to transport a large variety of goods, either by box car or gondola. Now the main types of trucks are gondola cars, flat cars and box cars. When the loading size or handling conditions can not be used box car, but also in the event of bad weather to protect the goods, the solution is to use flat car or gondola, covered with a canopy