固相异步轧制复合双金属材料工艺条件的确定

本文借助实验结果，得到了异步复合轧制压力及产品结合强度的回归表达式，在此基础上建立了多目标最优化模型，通过运用极大模理想点法得到了固相异步复合铝钢双金属材料的最佳工艺条件。     

实证分析:我国吸收外商直接投资的基本态势与战略选择

运用实证的方法,从发展阶段、总量、结构、效果等四个方面考察了改革开放十五年来我国吸收外商直接投资的基本态势,指出外商直接投资促进了我国生产力发展,增强了我国的综合国力,提高了人民生活水平,已成为推动我国国民经济发展的必不可少的重要组成部分;提出了九十年代后半期以至下个世纪初我国扩大吸收外商直接投资的战略措施。     

Test Studies on Performances of TGP Total Gradation Concrete

The Three Gorges Project （TGP） is the largest water conservancy and hydropower complex in the world, with a concrete consumption of 28 million m^3 in total. For such a significant world-attracting project, first rate quality concrete is needed. Various mechanical and deformation performances of hydraulic mass concrete are determined conventionally by the wet screening method to make small specimens and the test results of the small standard specimens are taken to represent the properties of the mass concrete. However, the quantity of the coarse aggregate after wet screening would be reduced by 30% or so and the gel materials would increase by 20% or so, thus causing significant differences between the properties of the small concrete specimen and that of the total gradation concrete. To well understand the performances of the total gradation concrete of TGP dam, test studies have been performed on the total gradation concrete, including compressive strength, split tensile strength, elastic modulus, ultimate tension, dry shrinkage, self volume defomation, creep, seepage prevention, and so on, and comparison made with the small standard specimens to find out the relationship between them, which have provided scientific gound for the design, operation and safety verification of the TGP dam.     

自组织过程的随机元胞自动机模拟

针对快速成形技术，提出了一种对实体数据模型进行自动诊断与修复的方法，并采用面向对象的软件编程技术在微机上予以实现．     

超几何分布中未知参数的精确置信区间

导出超几何分布的参数θ的精确置信区间,并进行应用举例.     

出口滋补酒中总糖的分光光度测定法

建立了出口滋补酒中总糖的分光光度测定法．该方法线性范围为０．０１ｍｇ／ｍＬ～０．４０ｍｇ／ｍＬ，平均回收率为９９．２％～１０１．２％，检出限为０．００５ｍｇ／ｍＬ．与经典的滴定法相比较，结果令人满意．     

概率微结构理论——固体力学和材料科学的结合点

首先列举事实说明现在研究固体力学行为时,越来越有必要来考虑材料的微结构,目前固体力学工作者考虑材料微结构的主要流派,它们的共同点和存在的问题,概率微结构理论及其困难,对前景的展望.     

Strength Properties of 3D Solid Orthogonal Panel Fabrics

IntroductionWith the development of high performance fiber andtextile perform manufacturing technology, fiber reinforcedcomposite materials are getting more and more attractivebecause they have many advantages such as their highstiffness and strength at low density, high specific energyabsorption behavior, and excellent fatigue performance.Therefore they are frequently used in a wide variety ofapplications[1], although most of them are two dimensional(2D) laminated comp…     

聚对苯二甲酸乙二酯的酰氯法固态聚合

用酰氯-固态缩聚法合成了不含金属盐催化剂的聚对苯二甲酸乙二酯(PET),其中含有不同量的二甘醇链结构,含量从0～16mol%。本文还对聚合物的链结构、分子量分布和聚合动力学作了初步探讨。