排序方式: 共有98条查询结果,搜索用时 15 毫秒
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对滚动轴承疲劳故障产生的机理及疲劳破损过程进行了详细的分析,并提出了轴承最佳游隙的选择原则. 相似文献
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通过对企业在变频器调速与应用过程中出现的异常情况进行原因分析,提出了解决问题的对策并在实际中加以验证,结果表明解决措施正确有效。 相似文献
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刘文芝 《兰州石化职业技术学院学报》2002,2(3):42-43
为了解决目前比较流行的Uinx存在一些漏洞问题 ,提出了几种解决方法 ,结果安全有效。 相似文献
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All the Americans cherish a beautiful myth in their hearts,which is called The American Dream.And in nowadays movies play a more and more important role in the American culture,as well as being a reflection of the American culture.The paper discussed this theme through explaining the four well-known American movies:The Great Gatsby,Foreest Gum,Born On The Fourth Of July And American Beauty. 相似文献
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李瑞娟 《柳州职业技术学院学报》2011,11(2):26-30
为了提高电路故障的测试速度和精度.在现有的传统故障测试集生成算法的基础上,引入蚁群生物的路径规划策略,设计一种基于蚁群算法的电路故障最小测试集生成算法。详细阐述蚁群算法的设计思想,给出数字电路测试问题向蚁群规划问题的转换过程,包括基于蚁群算法的最小测试集生成流程。并对设计的电路故障最小测试集生成算法进行了理论上的性能分析和实际的测试验证,测试结果表明该算法具有较高的综合效率。 相似文献
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马克思主义的"守夜人" --阿尔都塞的理论解读 总被引:9,自引:0,他引:9
阿尔都塞甘当马克思主义的"守夜人",全身心投入到重新解读马克思的理论活动中,其思想初衷是要在马克思主义与非马克思主义之间"划一条分界线",坚守马克思理论发现的科学特性."回归马克思",更准确地说是"回归成年马克思",构成了阿尔都塞理论解读的逻辑线索.有了结构主义和精神分析学的强力介入,阿尔都塞的理论解读不可避免地打上了这些时尚精神的烙印.他对马克思的全新解读,是把马克思描绘成一个不自觉的结构主义者,让马克思穿上了"理论反人道主义"的外衣.崭新的方法和概念,展现了一个全新的马克思的形象.这种解读着实给马克思主义的理论研究带来了一股难得的清风,为如何发展马克思主义提供了一种有益的启示. 相似文献
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Thomas G. Martin Rachel W. Pata Johanna D’Addario Lauren Yuknis Rebecca Kingston Richard Feinn 《Journal of sports sciences》2015,33(19):1988-1997
This study investigated whether haematological markers differ between young and masters marathon participants, running at similar performance levels. Nine young (31.89 ± 4.96 years) and eight masters (63.13 ± 4.61 years) runners participated. At five time points (pre-race through 54 h post-race), a complete blood cell count, basic metabolic panel and creatine kinase (CK) isoenzyme panel were assessed. Race performance was standardised using the World Masters Association Age Grading Performance Tables. Total CK levels were elevated for all participants at all time points post-race (P < 0.001). The CK-isoenzyme MB% was elevated across groups at 6, 30 and 54 h post-race (P < 0.01, P < 0.01 and P < 0.05), with masters runners having a higher CK-MB% at 30 and 54 h (P < 0.05, P < 0.05). Total white blood cell and neutrophil counts were elevated through 6 h post-race (P < 0.001), with higher levels found in younger runners (P < 0.001). When considering all blood work, masters runners had a higher number of abnormal values at 6, 30 and 54 h post-race (P < 0.05, P < 0.01 and P < 0.05). In conclusion, masters runners demonstrated sustained CK-MB elevation, which may suggest greater cardiac stress. However, future studies using additional cardiac markers should be completed to confirm these findings. In addition, masters runners showed an increased number of laboratory values outside normal range, indicating the body’s reduced capacity to respond to marathon running. 相似文献
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结合多年工作和实践,对发动机常见的机械故障的诊断与维修做进一步的总结介绍,便于专业及维修人员参考。 相似文献
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超宽带UWB是一种无线接入技术,拥有超宽带、极低功率谱密度两大特点,脉冲信号的产生,信号的调制以及信号的快速捕获、同步与检测是超宽带无线通信的技术关键。超宽带在多媒体内容日益丰富的消费电子应用中,具有良好的应用前景。 相似文献
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