Abstract:This paper discusses the hierachical architecture of an interconnection system between 3COM Ethernet and Telenet CCTNET.The pup packet transmission and file transmission protocol as well as the servers are also investigated.

Abstract:This paper combines the fhe fault analysis with the sensitivity analysis of the network by the theory of generalized linear functions.An efficient algorithm of fault parameters identification is developed,which makes the operation of fault parameters id

Abstract:In this paper,an optically-coupled linear isolation amplifier,Which consists of optical couplers and operational amplifieres,is presonted.It's principle is discribed and the error analysis is made.With its good linearity, high isolation voltage and wide

Abstract:本文在文[1] 、[2] 的基础上,根据等微增率准则,对不考虑启动耗量的火电厂机组投入、切除的经济性问题进行了研究。通过引入切换微增率,切换负荷的概念,提出了一种确定火电厂经济运行最优机组组合的实用算法。根据计算结果,调度人员可以了解在什么负荷范围内应选用哪种机组组合方式才是经济的。

Abstract:Based on the main idea of reference [1] ,an iterative technique is used for analysing the static behaviors of hydrostatic bearing-spindle system.Taking MB1520 type high speed grinder as an example,we relate its spindle system with the two bearing elasti

Abstract:Based on refence [1] ,this paper studies the chip thickness of leading edge,tooth top and trailing edge of the gear-shaing cutter.The computer program is made up and the curve of chip thickness is plotted.In this way, the tediousd manual calculations ca

Abstract:This paper studies a new type low-alloy corrosion resistant cast iron.The study is emphasized on the corrosion resistance of this cast iron in various solutions by using the method of contrast test.The test results have shown that the service life of th

Abstract:本文介绍了一种用普通砂轮和高速磨床进行高速高效低粗糙度磨削的新型超精密磨削加工技术。在大量的试验中对磨削表面粗糙度和质量进行系统地研究,并且获得了镜面(R_(zmin)=0. 048μm)。与传统的低速超精密磨削相比,采用这种新技术将会使磨削表面粗糙度大大降低和获得良好的表面质量。此外,也对其磨削机理进行了一定的探讨。

Abstract:The Reimr-Tiemann Reaction was modifed by using polyethene glycol as the phase transfer catalyst.The traditional aqueous sodium hydroxide was replaced with powdered sodium hydroxide,and a small amount of anhydrous protic solvent was added in Reimer-Tiem

Abstract:In this paper,several famous experiments to test coulomb's inverse square law are reviewed and the major factors affecting the measuring accuracy are analysed,The measuring methods used in these experiments are also compared.

Abstract:This pape addresses the problem of adding admixture into the soil-lime to improve its early compressiue strength,water and frost retistance.The pave- ment subgrade blanket which is made of this modified soil-lime is characte- rized by the higher loa

Abstract:In this paper,a universal velocity distrbution in a pipe proposed by the author is used for analyzing the incompressible turbulent boundary layer along a flat plate at zero incidence.Upon integration of Von Karman mom- entum integral equation,a set

Abstract:A method of curve-fitting to process the data obtained from damping measurement of free decaying vibration is presented and compared with the logarithmic decrement method.In order to determine the accuracy of the two methods and the factors that inf

Abstract:In this paper the linear sweep voltammetry involving 4-(quinolylazo)-1,3-dihydroxynaphthalene(2-QADNm)synthesized in this laboratory has been simulated.Important information related to the reaction mechanism has been obtained and some experimentally det