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cuo zhuang luo shuan sun shi 1000 yuan
Author(s): 
Pages: 29
Year: Issue:  3
Journal: Farm Machinery

Keyword:  小四轮拖拉机普通螺栓直接经济损失机械事故作业时间东方红修理缸套检修装配;
Abstract: <正> 一台东方红-12小四轮拖拉机,修理后作业时间不长,便发生重大机械事故,直接经济损失达1000元。原来,在检修装配缸套时,一根
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