为了满足我国小型排灌工程和水线清淤工作的需要,水利部长春机械研究所与长春水利机械厂共同研制了一种水陆两用单斗液压挖掘机(图1)。经调试和实地作业,证明性能良好,并于1981年7月通过国家鉴定。 In order to meet the needs of China’s small-scale irrigation and drainage projects and waterline dredging, the Changchun Machinery Research Institute of the Ministry of Water Resources and the Changchun Water Conservancy Machinery Plant jointly developed an amphibious single-bucket hydraulic excavator (Figure 1). After debugging and field operations, it proved to be of good performance and passed the national appraisal in July 1981.