前言当前,我国铁路易腐货物运量与运能的矛盾十分突出,特别是保温车数量严重不足。根据1978年统计,我国铁路保温车总数为2,259辆,仅占铁路货车总数的0.9％。1978年易腐货物总运量中由保温车装运的只占15％,其余的85％仍使用棚、敝车运输,由此造成的货物损失是十分惊人的。 Preface At present, the contradiction between the volume and capacity of perishable goods in our country is very prominent, especially the number of insulated vehicles is seriously insufficient. According to the statistics of 1978, the total number of railway thermal insulation vehicles in China is 2,259, accounting for only 0.9% of the total number of railway wagons. In 1978, only 15% of the total volume of perishable goods was transported by insulated vehicles, while the remaining 85% still used sheds and heavy vehicles. The resulting loss of goods was very alarming.