我们农机强度与振动毕业实践小组今年用了七个月时间,完成了三项农业机械强度与振动的课题:单缸柴油机缸体断裂原因分析与改进;手扶拖拉机变速箱体铸造发裂原因的试验分析;机动喷雾器的振动测量与减振措施。主要试验的结果已经被生产单位釆用。在完成任务过程中,我们到区、公社和大队的农机修造厂调查、劳动、学习、服 We strength and vibration of agricultural machinery graduation practice group spent seven months this year, completed the three topics of agricultural machinery strength and vibration: single cylinder diesel engine block fracture analysis and improvement; walking tractor gearbox casting cracking causes Test Analysis; Vibration Measurement and Damping Measures of Motorized Sprayer. The result of the main test has been adopted by the production unit. In completing the mission, we went to the area, commune and brigade farm machinery repair plant survey, labor, learning, service