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针对东风4D型机车前窗玻璃刮雨器常见故障进行分析 ,指出刮雨器设计、安装、材质上的不合理性 ,并提出了改进措施
According to the analysis of the common failures of windscreen wiper of DF4D locomotive, it points out the unreasonable design, installation and materials of windscreen wiper and puts forward the improvement measures