Abstract:A novel approach to modelin8 resonant conventers, was presented in this paper.The variant subtopologies of a converfer are unified into an equiualent topology by the periodicpulse functions;Laplace transforms of the sampled function ,insteady of continuous ,of a small sig-nal variable are made;furthermore,the linear approximation is processed according to the differenttypes of converters, The conventional series and parallel converters are used as examples to discussthe principles of the approach. Finally the computer calcultion data is compared with the experiment results to con firm the models to be correct.

Abstract:Equivalent couple-stresses and asymmetric equivalent stresees are introduced todescribe the equivalent constitutive equations of honeycomb materials in plane deformation,It is in-dicated from the field analysis of plane deformation accordin8 to the obtained constitutive equations-that this type of materials is of excellent capacity of storing energy.

Abstract:用金相学和云纹法分析了予应力Ｌｙ１２矩形靶承受高速弹体穿击区周围裂纹的萌生，扩展和断裂过程，扩展状态和破坏特征，研究表明：冲击载荷引起第２相粒子的振动，形成空洞是裂纹起裂的主要因素，空洞连接成串导致裂纹扩展和断裂；由于ｌｙ１２的第２相位粒子多处于晶界处，导致材料发生洞晶断裂，裂纹尖端塑性区分布成蝶形，裂纹两侧及与裂尖成４５°方向材料的塑性应变较大，裂尖正前向较远处塑性应变小。

Abstract:The paper depends on the new three theories(theory of dissipative structure.catastrophe theory and synergetics)as a guide,and establishes a developmental strategy planning forthe circumjacent reservoir regin of Longtan hydropower project which is the dragon head station often-cascade development along the Red Water Rlver,and adopts grey systems theory to predict theeconomic development of the reservoir region, The computational results show that the grey predic-tion model,the theory and methods of grey systems applying to economic system prediction are effi-clent.

Abstract:本文报道了Ｆ１２在插入两种不同丝径的小间距螺旋线圈时管内的流动沸腾传热及流阻特性，选取适当的螺旋丝径与较小的间距，内插线圈管的流动沸腾换热系数可达光管的２．１倍，而其流阻增大不到２．５倍，相应的热力性能系数最大可达８．１４。该法可用以强化制冷蒸发器及ＯＡＫ系列套片管式蒸发器的传热。

Abstract:We atternpt to describe an Engineering drawings scan and vectorization inputsystem,which can send to drawings into a computer and transfer the resulting data to commerciallyavailable CAD/CAM systems by image processing and pattern recognization; Some results processedby the system are given in the paper.

Abstract:The JPEEG algorithm for Stillimage ISO Encoding is introduced in this paper.Three encoding types for JPEG algorithm are discussed.Anew Fast DCT algorithm is proposed inthe paper. A software for JPEG algorithm on baseline code is developmented; The experimenceshows that the results are eatisfactory.

Abstract:Operational Deflection Shapes of large scale electromechanical system can be ex-tracted directly from multipoints response of the operating system by using of the modal shape analy-sis method. Thev can be used for engineers evaluating the practical dynamic beavior of the largescale elecltromechanical system,checking the existence of local reso,iance of the Stibsystem. and in-dentifying the wcakened positions of the rigidity of structure, In this paper the method of measuringand extracting the operational deflection shal1e of the electromecha nical system is given and theavailability of operational deflection shape is proved by analyzing the actual vibration of a large ex-haust fan system as an example.

Abstract:Having analysed present situation of disposition of flarnmable harmful wastes inthe city of chongqing,commercial operation management medel in which waste recovery companiesare suggested as the media to dispose wastes is presented with the technique of central in cineration.Both economic dvnamic reasons and related conditions of this regional diqpcoition of flam mablehar m ful wastes are reviewed in detail.

Abstract:以ＱＹ８０汽车起重机四轴转向摇臂机构为例，利用多刚体系统运动学理论对机构作了空间运动分析，建立了转向摇臂机构优化设计的数学模型，并用改进了的约束随机方向搜索法编写了优化设计的微机软件，并已应用于生产实践。

Abstract:用软锰矿浆进行了吸收燃煤烟气中二氧化硫的试验结果表明，烟气脱硫率达９０％－９５％，锰浸出率达８２％；将吸收液进行过滤，除铁，除钙，再浓缩结晶，可得到在工农业上具有重要应用价值的硫酸锰产品。

Abstract:he low tem peratu re and high temperature reduction properties for differentkinds and structures vanadium titaniferrous magnetite have been studied in this paper. The influenceof mineral structure,pretreatment method, reduction temperature and time as well as redlictin con-dition on the reduction beha viou r has also been in vestigated. The relationship between reduction be-haviour of V-Ti-magnetite and its smeIting reduction and B.F.smelting has been analysed.

Abstract:就ＢａＯ质量含量１．０％－３．７％，ＴｉＯ２质量含量１．５％－４．０％，炉渣二元碱度（ＣａＯ／ＳｉＯ２）０．９５－１．１５的高炉渣脱硫能力进行了研究。结果表明：在实验条件下，炉渣脱硫反应是二级反应；炉渣硫分配系数Ｌｓ随二元碱度提高而提高；渣中ＴｉＯ２为３％时，Ｌｓ有一峰值。

Abstract:从脱硫的角度对３各实用的含钛炉渣碱表示方法作了比较。光学碱度在炉渣组分变化很大的范围内，均能较满意地揭示含钛炉渣的冶金性能。在１５００℃和１４５０℃下由气／渣和金／渣平衡数据，分别求得硫容量与光学碱度的相互关系。

Abstract:Introducing a set of operation monitoring and Controlling system for petroleumpump unit. The system consists of the principal computer-AST386 micro-computer and subordinatecomputer-STD Bus industrial control computer. It ean provide real time and graphical display of 55channel parameters,supply rarious information of man-machine talk by printing,power cutouutprotection,3 optimum control routes. With the help of serial communication,the principal andsubordinate computer ean make petroleum pumps operate safely in a rational working case with alower waste and greater runoff of the unit.

Abstract:This paper presents a mathematical model , simulating program and results ofball pulverlzed coal storage system. The program of simulation is writen with ACSL language. theGear arithmetics to solve the differentlal equations is recom merded by MMS. The model has beenmodularized according to the reguirements of MMS. This modular called DTM modular can be con-sidered as one component of MMS modular library.

Abstract:以水和结晶醋酸钠作换热和蓄热介质，对内纵翅片套管相变蓄热器的充，放热特性进行了实验。实验结果表明：水流速增加，充，放热速度增加；进口水温升高，充热速度越快，放热越慢。此外，综合实验数据得到了两个关蓄热器性能的关系式。

Abstract:The softwa re system suggested in this paper is applied to replace the traditionalhanded-computation forms. It uses the cubic sample interpolation and numerical integral,and is writ-ten with FORTRAN according to the accurate formula. With this software system,the nine sorts ofcomputation results of ship properties can be obtained. The system is con nected through SCR filewith AutoCAD,and ean draw automatically eleven sorts of pictures according to the computation re-sults.

Abstract:运用系统工程优化理论，对开采有五十余年历史，地质条件复杂，水，火，瓦斯，冒顶等自然灾害俱全的多灾害，多水平，多环节，多系统的老矿井－南桐煤矿七水平延伸方案的主体工程进行了优化设计，建立了经济数学模型，并以年吨煤费用最低为目标函数，借助计算机对二万多个方案及其数据进行计算与处理。并相应得出年吨煤费用随煤层倾角，阶段垂高，采区长度而变的规律。

Abstract:通过滴定曲线分析和相应的数据处理，用电位滴定法准确地测定了２，４，６－三硝基－１，３－二羟基苯的逐级酸度常数，用同样的方法测定草酸的Ｋα１和Ｋα２，测值与文献值完全一致，证明了测定结果的可靠性。

Abstract:实验测得了猫在心室颤前，后的脑微动脉内径及血压的变化，引入增量应力和应变的概念，计算了在心室颤前后微动脉血管（内径小于１００μｍ）应力与应变的变化规律，并获得了在不同期间内血管的本构方程。