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调查与分析表明，ＹＺ２５Ｂ型空调客车电力干线管磨车轮，构成行车安全隐患。建议采取修改管路位置及严格控制旅客超员率的办法予以解决
Investigation and analysis show that, YZ25B-type air-conditioned passenger car power pipe mill wheel, constitute a traffic safety hazard. Proposed to modify the location of the pipeline and strictly control the passenger over-payment rate to be resolved