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1.
介绍了计算机集成制造系统的基本概念及在国内外的发展情况;针对流程工业,描述了其结构与功能模块,指出了其应用前景。  相似文献   

2.
介绍了多功能程控高温标定系统的功能和组成,阐述了控制系统的工作原理,硬件和软件设计及相关技术问题。实际应用表明,该系统可靠性高、操作简单、具有良好的经济和社会效益。  相似文献   

3.
计算机辅助工业设计技术,是计算机辅助工业设计系统的内部支撑技术.工业设计是一门综合性的交叉性学科:在引入计算机支持协同工作的基础上,把WEB理论、软件代理技术,应用到工业设计中,并提出了CSCW的智能CAID系统.  相似文献   

4.
3C技术在制楦工业中的应用   总被引:2,自引:0,他引:2  
鞋楦是制鞋工业中皮鞋款式的基准。传统的手工制楦方法制作周期和生产效率低,严重地制约了整个制鞋业的发展。基于此,作者提出了鞋楦3C(CAMe/CAD/CAM)集成技术的概念和系统组成,并着重讨论了楦形测量、鞋楦CAD技术、鞋楦CAM技术在制楦 工业中的应用。  相似文献   

5.
本文介绍了一种航空发动机燃油泵自动测试系统的设计。针对系统功能特点阐述了系统硬件搭建和软件的设计思想,讨论了设计中应用的主要技术手段.  相似文献   

6.
针对陶瓷生产的需要,研制了一种应用于素烧窑生产过程监测的工业计算机控制系统,介绍了系统的设计思想和主要功能,软硬件结构和实现方法,该系统具有功能齐全、操作方便、性能价格比高等优点。  相似文献   

7.
为保证煤场送煤工作的安全运行和对值班员工的正确评价,利用VB建立了煤车的监控系统,给出了系统的硬件及软件框图。  相似文献   

8.
基于Web的工业设计信息系统设计与实现   总被引:1,自引:3,他引:1  
以分析工业设计师在设计中所需要的信息辅助为出发点,运用软件工程和结构化分析方法,并结合工业设计流程完成了系统功能设计、结构设计,确定了信息资源构成,建立了基于Web的工业设计的信息系统框架。通过原型系统实现,验证了该系统的各项功能。  相似文献   

9.
多功能程控高温标定系统设计   总被引:1,自引:0,他引:1  
介绍了多功能程控高温标定系统的功能和组成 ,阐述了控制系统的工作原理、硬件和软件设计及相关技术问题。实际应用表明 ,该系统可靠性高、操作简单 ,具有良好的经济和社会效益  相似文献   

10.
采用分布式控制系统设计并实现了一套粮食色选机的性能检测系统,对该机的色选性能(包括色选效率、色选质量等)进行测量,确定色选机能否满足出厂要求。使用表明,采用该系统进行性能检测与以前手工检测相比,可较大地提高色选机的生产效率。  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

15.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

16.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

17.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

18.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

19.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

20.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

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