最新刊期
      卷 ， 期 2 ， 1999
      • Li Kefeng
        Issue 2, (1999)
        摘要：In this paper, we discuss some basic properties of the extensions and give complexfication of Leftsupersymmetric algebra.  
        关键词：Leftsupersymmetric algebra;Lie superalgebra;Compatible Lie superalgebra   
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        发布时间：2022-01-07
      • Zhang Jinqing
        Issue 2, (1999)
        摘要：Under wider conditions, the maximal and minimal solutions of the periodic boundary value problem for first order nonlinear differential equations in Banach spaces are investigated, and the iterative algorithm of the solutions is also obtained.   
        关键词：Banach spaces;Nonlinear differential equations;Iterative solutions   
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        发布时间：2022-01-07
      • Sun Shurong
        Issue 2, (1999)
        摘要：The oscillation for a class of the nonlinear neutral difference equations with several delay arguments is studied. A necessary and sufficient condition for oscillation of the equations is given out.  
        关键词：Delay arguments;Neutral difference equation;Oscillation   
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        发布时间：2022-01-07
      • Zuo Liancui
        Issue 2, (1999)
        摘要：In this paper, unilateral ideals, Pseudo ideals and double ideals in matrice ring on real number field are discussed, the structure and characters is given.  
        关键词：Left（right）ideal;Pseudo ideal;Double ideal   
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        发布时间：2022-01-07
      • Huang Shoukun Sun Quansen
        Issue 2, (1999)
        摘要：In this paper, we discussed mutual relationship between quadratic form and （semi） stable matrix. Judging mehtod between each other is obtained. Besides, with different methods of completing the square of quadratic form, we obtain several conditions of judging（semi） stable matrix.  
        关键词：Quadratic form;Semi stable matrix;Stable matrix   
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        发布时间：2022-01-07
      • Zhao Xiping Liu Guo Wang Chuankui
        Issue 2, (1999)
        摘要：The paper develops a new numerical method to calculate the transmission coefficient for one kind of potential barrier with even parity. In this method, the scattering states and the standing states of Schrodinger equation are connected. Therefore, the transmission coefficients and phases for wave functions with even and odd parities can be solved for such kind of barriers where those quantities have no analytical expressions. As examples, we solve the transmission coefficients and phases for threetyped barriers which clearly display the properties of particles scattered by the barriers.  
        关键词：Transmission coeffcient;Barrier with even parity;Phase   
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        发布时间：2022-01-07
      • Issue 2, (1999)
        摘要：Two methods for obtaining the Green function series solution is presented and some examples are given.  
        关键词：Green function;Separated variable;δfunction   
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        159
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        发布时间：2022-01-07
      • Issue 2, (1999)
        摘要：The liquid membrane transport of alkali metal ions（K+ and Na+） using four dibenzoacrown ethers as ioncarriers was studied. The results show that the transport rates are closely related to whether the cavity of the crown ether fits well with the size of the ion.  
        关键词：Azocrown ether;Liquid membrane transport;Pirates;Ionophore   
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        发布时间：2022-01-07
      • Zhao Weihong
        Issue 2, (1999)
        摘要：Square wave anodic stripping voltammetry method to distinguish dissolved and colloidal lead in presence of hematite colloid was studied. Hematite colloid was found to have no effect on the electrochemical determination of the lead ion. The variations in peak current with shake time, pH and added lead concetration of presence of colloid were consistent with adsorptive dynamic curve, pH curve and isotherm by separating solid and liquid phases method. The peak current variation reflected the change of lead ion in solution. The titration curve of hematite colloid suspension with lead ion is similar to that of dissolved ligand. So we can determine the adsorptive capacity of colloid suspension by eletroanalytical mehtod.  
        关键词：Square wave anodic stripping voltammetry method;Dissolved;Colloidal;Lead;Hematite   
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        发布时间：2022-01-07
      • Yang Xiuli Wang Jianjun Chen Yanli
        Issue 2, (1999)
        摘要：In this paper, we proved that the hydrolysis reaction of 3,3dichloro1phenylpropene is a first reaction by means of determining its ultraviolet spectroscopy. Furthermore, we studied the main factors that affect the hydrolytic rate of 3,3dichloro1phenylporpene. The factors include the properties of the solvent and the substance present in the solvent.  
        关键词：3,3Dichloro1phenylpropene;Hydrolysis;Reaction rate   
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        发布时间：2022-01-07
      • Xie Wenxiu Wang Dangsheng
        Issue 2, (1999)
        摘要：A new synthesis method was proposed based on studies on the acid condition under which urea reacted with formaldehyde energy was saved and the quantity of formaldehyde resin was reduced, which increased the endurance to water of resin.  
        关键词：A acid condition;PVA;Urea formaldehyde   
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        发布时间：2022-01-07
      • Zhong Kangmin Guo Peiquan Zhang Mingzhe
        Issue 2, (1999)
        摘要：Two kinds of centrifugal clutch with superforceamplifying mechanism, toggle and wedge forceamplifying mechanism, were made known to the public. Their operation principle was introduced. The designing calculation formulas of output force and driving torque, contact angular velocity and contact speed, rated angular velocity and rated speed, and maximum load of spring, were given out. The manufacturing cost of a centrifugal clutch with superforceamplifying mechanism is a little bit more than that of commonly used centrifugal clutch and its driving torque is much bigger than that of a conventional one.  
        关键词：Centrifugal force;Clutch;Force amplifying Mechanism;Force amplifying weight;Driving weight;Toggle;Wedge   
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        发布时间：2022-01-07
      • Shi Jinping
        Issue 2, (1999)
        摘要：A new kind of fitting method with linear interpolation for noncircular curve was introduced. Fitting error was analyzed and evaluated by area deviation, and was controlled by maximum deviation when calculating nodes. It has the features of less number of nodes, simplified calculating and programming with same range of fitting error.  
        关键词：Fitting error;Approximating method;Fitting with least number of nodes   
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        发布时间：2022-01-07
      • Zhang Jingchun Zhang Hua Zhang Shangying
        Issue 2, (1999)
        摘要：There are many bumping and mass elements in mechanics model. In order to easily work out the transfer function of mechanics system model, we can take these elements as elastic elements in imaginary domain. A new coneept called imaginary elastic rigidity is introdnced. It is similar to imaginary resistance in electric metwork systems. Different kinds of elements can be seen as elastic elements in parallel or in series and can be handled with the same concept while in accordance with relevent physical laws. This method eliminates the necessity of differential equations to get transfer functions. We can conveniently and directly obtain the block diagrams of systems. This method is useful and simple.   
        关键词：Elastic element;Bumping elements;Mass element;Elastic rigidity;Block diagraml;Transfer function;Feed back   
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        发布时间：2022-01-07
      • Li Jian Li Jie
        Issue 2, (1999)
        摘要：According to the theory of bending deformation of a cantilever of the strength of materials, a discussion is made on the original point of the shapertools. And therefore the shape of the shapertools is obtained. In addition, the principle of the toolholder declination is described in this paper by means of the relative positions of spacial planes.  
        关键词：Shapertools;Original layer;Machined surface;Backtroke planes   
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        发布时间：2022-01-07
      • Liu Chaoying Xia Shumin
        Issue 2, (1999)
        摘要：In this paper, the materile damage measure method in elastic constant is discussed from the theory and experiment.  
        关键词：Elastic constant;Damage;Cualloy;Alalloy   
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        发布时间：2022-01-07
      • Zhang Xizeng
        Issue 2, (1999)
        摘要：The method of calculating simple beam deflection, using the spandepthratio, has been presented in this paper. By this way, the result is accurate and process is simple.  
        关键词：Simple beam;Spandepthratio;Deflection calculation   
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        发布时间：2022-01-07
      • Zhang Jun Zhang Wenyi Xue Xi
        Issue 2, (1999)
        摘要：The paper is about the link of C Language and Assembler Language. First, it state the memory mode of the compiler and the methods of how C Language produce the connection information as Segment and Group, etc. Then, it introduce the needed rules when it links. At last, it will give us the concrete example about the link of two language.  
        关键词：Segment;Group;Memmory mode   
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        发布时间：2022-01-07
      • Yu Huiqing Hong Yan Zhang Qilai
        Issue 2, (1999)
        摘要：This paper describes the development program of the analysis system of sunshine distance of buildings based on AutoCAD, analyses the technique principles and mathematical expressions of the system, provides flow chart of computer analysis, and submits existing problems and deficiencies.  
        关键词：Computer application;AutoCAD;Urban planning;Buildings   
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        发布时间：2022-01-07
      • Meng Xianhua
        Issue 2, (1999)
        摘要：The function mechanism of MRP II is elaborated. The effective factors of implementing MRP II are analyzed, and they are summed to the four key factors of staff, education, management and implementing, the control strategies of the key factors are discussed.  
        关键词：MRP II;Key factor;Analysis;Control   
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        发布时间：2022-01-07
      • Ma Yao Chen Bing Ma Li
        Issue 2, (1999)
        摘要：This artide mainly introduces the knowlage about Computer overloking. It includes the concrete operation steps, the essential condition of overlocking, the problems may be met and how to slove them. This article will give the mass of computer staff members much help to raise working efficiency with its original view and operatbility.  
        关键词：CPU;(Ext/Int)Frequency;Thermal diffusion   
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        发布时间：2022-01-07
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