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21世纪90年代以来,我国道路运输业在社会经济发展中的基础性作用日益增强,随之以商用汽车为主体的道路运输车辆的保有量也在不断增长,其中货运车辆结构呈现出了向厢式化、专用化和重型化发展的趋势。 近些年来,我国不少商用车（包括专用汽车）制造企业通过自主开发和技
Since the 1990s, the basic role of China’s road transport industry in social and economic development has been increasing, and the number of road transport vehicles with commercial vehicles as the main body has also been increasing, among which the freight vehicle structure has shown The trend of development, specialization and heavy-duty. In recent years, many commercial vehicles (including special vehicles) manufacturing enterprises in China have developed and developed their own technologies.