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通过对原有22型行李车侧拉门结构及运用情况调研分析,找到解决存在惯性质量问题的突破口,研制了适用提速行李车的侧拉门新型结构.新的侧拉门采用模块化设计安装、工艺简单、检修方便实用、性能可靠,具有原22型行李车侧拉门所不具备的优点. 相似文献
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Classification algorithm is orc of the key techniques to affect text automatic classification system‘s performance, play an important role in automatic classification research area. This paper comparatively analyzed kNN. VSM and hybrid classification algorithm presented by our research group. Some 2000 pieces of Internet news provided by ChinalnfoBank are used in the experiment. The result shows that the hybrid algorithm‘s performance presented by the groups is superior to the other two allzorithms. 相似文献
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王永成 《电力机车与城轨车辆》2019,(2)
文章将DK-1型制动机的原理和工作实际相结合,对DK-1型制动机在列车管减压时制动缸压力偏低及紧急位时的故障现象进行分析,并提出初期的处理方案。 相似文献
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