共查询到20条相似文献,搜索用时 31 毫秒
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谭建军 《机电产品开发与创新》2007,20(5):125-126,140
将多台计算机配置适当的硬、软件,组织起来协同工作,模拟为一台具备故障无缝切换、网络负载均衡、组件负载均衡的服务器,这种技术称为计算机群集.MSCS (Microsoft Cluster Server)是服务器群集服务软件,MSCS与Windows 2000操作系统集成,是经济、实用、安全的服务器群集服务软件. 相似文献
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Bader MG 《Journal of microscopy》2001,201(2):110-121
Polymer matrix composites are based on the combination of stiff, strong reinforcing fibres with either thermosetting or thermoplastic polymer matrices. Since their introduction in the early 1940s, the world market has increased to some 5 million tonnes per annum, and some composites may now be considered commodity materials. The spectrum of fibre-reinforced plastics ranges from very high-performance speciality materials costing more than $1000/kg to these commodity composites, with more modest properties, at less than $10/kg. The performance of composites is determined by the properties of the fibre, the fraction of fibre in the composite and the structure, or fibre architecture. Processing technologies have been developed which maximise fibre content and precisely control the fibre architecture allowing for the manufacture of components with mechanical properties tailored to service requirements. Many composites offer significant advantages in specific stiffness and/or specific strength over metals. This makes them attractive for applications where high mechanical performance and minimum weight are important. However, the wider acceptance of composites is based on their ability to offer a more cost-effective alternative. In particular, composites also allow a dramatic reduction in the parts count in many applications, which leads to significant manufacturing advantages and greater economy. 相似文献
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北京京渝天河计算机软件技术有限责任公司 ,经过一年多对国内大、中型企业工艺工作的调研 ,总结了国内CAPP技术研究和应用的经验与教训 ,经过两年多的开发 ,在完善的系统需求定义和先进的系统设计基础上 ,推出了天河TH—CAPP2 0 0 0智能化、集成化工艺设计平台系统。经许继电气股份有限公司工艺所、北京首都航天机械公司等 10余厂家实施使用 ,取得了很好的效果。下面将向读者介绍该系统的主要特点。 相似文献
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阐述了“清单系统2000”软件的开发情况及其优点,说明了切合实际地开发应用软件有利于提高工作效率和工作质量。 相似文献
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《世界制造技术与装备市场》2001,(1)
第1期(总第48期)迈人2侧拭〕年的中国机床工具工业··········································……6China Machinel,001 and lb〕Indus*叮Marching toZ(X幻对我国机床工业技术发展历史的几点看法······························……8Some饰inionon珠hnieal Development比st呷OfM‘hine Tool Indust叮 第4期(总第51期)英文摘要·····························································… 相似文献
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ISO9000:2000中定义设计和开发“将要求转换为产品、过程或体系的规定的特性或规范的一组过程。”“设计”和“开发”有时是同义的,有时用于规定整个设计和开发过程的不同阶段。对硬件产品制造而言,ISO90001中“7.3设计和开发”主要指的是产品的设计和开发。本文着重对设计开发的各个阶段及其删减的要求进行了解释。 相似文献
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介绍了利用AutoCAD R2000软件进行对话框设计的方法,列举出列表框,滑动条和图象等三种控件的处理方法,并给出程序说明如何激活,设置和获取控件的数值。然后详细说明如何使用LISP程序实现对DCL的驱动,以及设计DCL程序应注意的问题。 相似文献