天津工程机械研究所在有关厂的协助下承担的国家重点科研攻关项目——“提高装载机、推土机液压系统性能研究”,于1986年1月21日在天津市进行了国家评审验收。部局和有关厂所校及使用单位派员组成了评审委员会,会议审查了任务总结、技术文件和试验报告,经过审查评议, Tianjin Institute of Construction Machinery, under the assistance of the relevant plant, was responsible for the national key scientific research project “Improvement of Loader, Bulldozer Hydraulic System Performance Study” and was reviewed and accepted by the State on January 21, 1986 in Tianjin. Departmental and related factory schools and their use units sent personnel to form a review committee. The meeting reviewed task summaries, technical documents, and test reports. After review review,