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压实机械是基础设施建设中不可或缺的技术装备,其生产和使用与国民经济发展的大环境密不可分。中国压实机械自20世纪50年代创业以
Compaction machinery is an indispensable technical equipment in infrastructure construction, and its production and use are inextricably linked with the environment of national economic development. China compaction machinery since the 1950s to start a business