本刊最近收到刘军云等许多读者来信，在对本刊内容、信息量和编排给予肯定的同时纷纷要求增加、丰富改装车、挂车等专用车的信息量。为此，从本期起我们开设了“挂车之窗”栏目，希望广大读者和相关人士能喜欢并支持这个新栏目。一编者一研究和优化半挂车的设计参数，以满足各? The magazine has recently received letters from many readers such as Liu Junyun. While affirming the content, amount of information and layout of the magazine, they have also asked to increase and enrich the information volume of special vehicles such as modified cars and trailers. To this end, from this issue we have opened a “trailer window” section, I hope the majority of readers and stakeholders who like and support this new section. An editor to research and optimize the semi-trailer design parameters to meet each?