共查询到10条相似文献,搜索用时 46 毫秒
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在图象的数字化和图形、图像的显示上,正六角形网格比正方形网格更好。本文根据第二代图像编码技术的设计原理,将这一原理应用于图像压缩编码中,设计了准正六角形网格亚取样图像编码实现方法,即:从现有的图象数字化正方形网格阵列中抽取出一个类正六角形网格的亚(小)图象阵列。该方法的重建图象在边界特征保持及综合视觉效果上,明显优于同级的正方形网格亚取样方案。 相似文献
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长方形断面钢桥墩抗震性能评价方法的研究 总被引:4,自引:0,他引:4
在评价长方形断面钢桥墩的抗震性能时,通常直接引用正方形断面钢制桥墩的抗震性能评价方法。文献[1]已经证明,填充了水泥的正方形断面钢制桥墩的抗震性能评价方法,不能直接用在长方形断面上。而对于没有填充水泥的长方形断面钢制桥墩,还没有相关的研究。本文对长方形断面钢制桥墩试件进行了正负交替荷载实验研究,并把实验值和计算值进行了比较分析,得出了一些重要结论。 相似文献
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《铁道货运》2014,(5):I0001-I0001
Targeting with basic status of Kashgar Freight Transport Center, including unbalanced receivingdispatching volume, nonstandard short-distance transport market and unimproved logistic system, based on expounding the practice of expanding the acceptance-delivery industry by Kashgar Freight Transport Center, such as transferring ideas and concepts, actively expanding clients, developing the process marketing, providing customized services, seizing logistic market and optimizing service language, this paper puts forward the thoughts on expanding acceptance-delivery industry by Kashgar Freight Transport Center and studies the principle of the industry. 相似文献
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当锯切很多相同零件时,车间通常将未加工的料捆在一起切割、可提高工作效率。对于正方形和长方形棒料很好捆住,但对于圆棒料的锯切,尤其是在锯床没有配备多用途的圆棒夹持器的情况下,可使用1种卡箍式管状台钳,如图1所示: 相似文献
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Taking the logistic project of Bama mineral water inter-regional transportation by Liuzhou freigh transport center of Nanning Railway Administration, this paper analyzes the process of working out Iogisti planning program from aspects of logistic program, economic analysis and advantages & disadvantage,, analysis. During the practice of railway freight transportation transferring to modern logistics, the thoughts or many aspects were put forward, including: railway enterprise should actively take door-to-door marketing anc expand service scope, should provide extended service chains of logistic value-added actions and organiz~ trans-administration logistic transportation as to increase service quality, all of these have reference meanin( for other scattered "white goods" transportation. 相似文献