论文部分内容阅读
第四部分:1945—1975年 四.1945年后冷藏链的发展 (四).铁路冷藏运输 1.1945年控制温度下的铁路运输早已具备一定的设施(早在1860年,美国铁路保温车和冷藏车已开始运行)。第二次世界大战以前,铁路冷藏运输并没有惊人的发明,但大大得到了改善和提高。美国铁路与公路运输竞争激烈,1950年左右铁路部门注重于改进果蔬运输车辆。当时有11万辆,其中3.5万辆符合农业部和果蔬联合会联合制订的运输推荐条件。
Part Four: 1945-1975 IV. Development of the Cold Chain after 1945 IV. Refrigerated Railway Transport 1. Rail transport under the controlled temperature of 1945 already has some facilities already in place (as early as 1860, US railroad insulated vehicles and refrigerated trucks Has started to run). Before the Second World War, there was no astonishing invention on the refrigerated transport of railways, but it has greatly improved and improved. The U.S. railways and road transport are highly competitive. In 1950, the railway sector focused on improving fruit and vegetable transport vehicles. At that time, there were 110,000 vehicles, of which 35,000 were in line with the transportation recommendation conditions jointly set by the Ministry of Agriculture and the Fruit and Vegetable Federation.