共查询到19条相似文献,搜索用时 187 毫秒
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本文分析了彩管一厂蒸铝生产线的现状和存在的问题,提出通过技术改造可以提高生产节拍、降低生产成本。对技术改造中的机械、控制以及进气方法进行了探讨。 相似文献
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本文介绍了彩管蒸铝设备以及蒸铝小车的结构,蒸铝小车的故障及其维修。蒸铝小车的管理和质量控制对蒸铝设备的正常运行、产品质量的提高是十分重要的。 相似文献
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本文揭示了日本技术CPT生产过程中,荧光粉条“蓝污”不良发生在蒸铝工序,叙述了其主要成因、采取的对策措施,使“蓝污”得到有效控制。 相似文献
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Wang Yongming Huang Zailu 《电子科学学刊(英文版)》1998,15(1):16-21
The analysis of cell loss rates in an ATM Mux with loss priorities is an important problem in the-study of traffic control in ATM networks. In this paper, the loss rates of the cells with different priorities in an ATM Mux are analyzed by approximating the actual input process with two-state MMDP and fluid flow technique, and the analytical expressions of the relation between the loss rates and the buffer size are obtained. Simulation shows that the approach is sulliciently accurate for applications. 相似文献
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因为电子产品容易吸收水分,所以电子行业对介电常数、介质损耗角的关注程度一直居高不下。文章概述了在覆铜板行业中测试介电常数、介质损耗角的影响因素。 相似文献
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在彩管涂屏生产中很少遇到与玻壳设计参数有关的工艺不良问题。本文在工艺不良对策中提出了屏内面粗糙度对荧光粉涂敷过程有影响的观点 ,并进行了深入分析 ,对荧光粉涂敷工艺的研究及生产过程的控制提供了新的思路 相似文献
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全自动探针测试台之关键技术 总被引:1,自引:0,他引:1
高慧莹 《电子工业专用设备》2005,34(7):52-55
根据国内外半导体产业的发展趋势,分析了φ200mm全自动探针测试台在中国的发展及所需的相关技术。 相似文献
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Real-time multimedia applications have to use forward error correction (FEC) anderror concealment techniques to cope with
losses in today’s best-effort Internet. The efficiency of these solutions is known however to depend on the correlation between
losses in the media stream. In this paper we investigate how the packet size distribution affects the packet loss process,
that is, the distribution of the number of lost packets in a block, the related FEC performance and the average loss run length.
We present mathematical models for the loss process of the MMPP+M/D/1/K and the MMPP+M/M/1/K queues; we validate the models
via simulations, and compare the results to simulation results with an MPEG-4 coded video trace. We conclude that the deterministic
packet size distribution (PSD) not only results in lower stationary loss probability than the exponential one, but also gives
a less correlated loss process, both at a particular average link load and at a particular stationary loss probability as
seen by the media stream.Our results show that for applications that can only measure the packet loss probability, the effects
of the PSD on FEC performance are higher in access networks, where a single multimedia stream might affect the multiplexing
behavior. Our results show that the effects of the PSD on FEC performance are higher in access networks, where a single multimedia
stream might affect the multiplexing behavior and thus can improve the queuing performance by decreasing the variance of its
PSD. 相似文献
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