对我国坏帐核算的思考

针对企业因赊销而发生的坏帐损失的帐务处理，通过对坏帐的确认、计量、记录和报告的比较分析，论述了我国坏帐核算中存在的种种不足     

Calculation of thermal stress field with non-linear surface heat-transfer coefficient during quenching

The heat conduction equation in a coupled thermo-inelastic body, was derived by means of the irreversible thermodynamics and the measured data of the inner dissipation for metal. The coupled coefficients, which are dependent on temperature and inelastic strain rate, can be determined by the measured data of inner dissipation for metal. The functional of a coupled thermal inelastic problem was derived by means of nonlinear functional analysis theory. Finally, it is proved that the critical points of the functional are the solutions of coupled thermal inelastic equations.     

Random fuzzy variable foundation for Grey differential equation modeling

Grey differential equation (GDE) theory, which is a young branch of mathematical theory, deals with a system dynamic modeling having only a small size of system sampling information available for the investigation. Deng’s creation is very delicate and consequently forms one of the core parts of Grey system methodologies. However, what is the appropriate mathematical foundation for GDE modeling remains debatable. In this paper, we analyze the sources of error contributions and accordingly propose a random fuzzy variable foundation for GDE modeling based on the classical Gauss error law and the fuzzy credibility measure theory.     

快速启闭阀的常见故障分析及分析步骤

从动作原理和状态反馈这两个回路入手。分析本公司热电站快速启闭阀的故障现象，并对故障分析步骤作了详细总结。     

空气压缩机用组合式过滤器

本文介绍组合式空气消声过滤器的用途、结构、工作原理和使用效果。它是空气压缩机前级的专用理想设备，推广使用可获得良好的综合效益。     

Czochralski单晶拉制过程中一种自由边界问题整体解的存在唯一性

通过引入由晶体温度u(x,t)和晶体的自由边界s(t)构成的向量空间Sd,以及定义在其上的映射d,研究了基于Czochralski单晶拉制方法的数学模型中一类自由边界问题解的存在唯一性.采用压缩映照原理方法证明了该问题在Banach空间(Sd,d)上局部解的存在唯一性,并利用延拓方法得到了整体经典解的存在唯一性.     

涡轮机二维叶栅形状的数值计算

对定常正问题进行研究,在变分原理的基础上,用有限元方法对叶栅进行了数值计算.将翼型NACA0012和NACA2412作为计算对象,给出翼型的形状,计算出表面速度分布,之后与标准的速度分布进行比较.结果表明理论正确,方法可行.     

环氧树脂压力凝胶的自动注料系统

文章论述了自动压力凝胶工艺生产中的注料过程，介绍了一种有效的自动注料系统的设计思想。     

加速溶剂萃取的原因及应用

加速溶剂荟取是一项新颖的样品前处理技术。本文详细地讨论该技术的基本原理，影响因素，突出的优点及应用。     

CFG桩复合地基的原理设计及经济比较

阐述了CFG桩复合地基的原理，包括它的构成、加固机理。详细介绍了CFG桩复合地基的设计方法，包括它的适应范围、设计计算及构造要求。给出了几个实际工程不同基础形式与CFG桩进行经济比较的结果。