现代军用通信设备结构设计新理念

科学技术在不断发展，军用通信设备结构设计的内涵也在不断丰富，时代在不断进步，人们对设备的审美要求越来越高，设计人员应顺应时代发展的潮流，积极吸收、采用新的设计理念。本文详细讨论了有关军用通信设备结构设计新理念的主要内容-创新设计、模块化设计、小型化设计、工业设计和超前设计。     

一次盐水设备运行总结

介绍了内蒙古海吉氯碱化工股份有限公司6万t/a离子膜烧碱装置一次盐水设备的运行情况和运行过程中存在的问题及相应的技改措施.     

数字压力计检定装置

在贵州国防区域计量站5505校准实验室建立了一套数字压力计检定装置,可满足对区域内各工厂开展数字式压力仪器检定的要求.     

变频电液速度控制系统的实验研究

本文基于变频调速技术,构建了一个较合理的变频电液速度控制系统,并采取模糊控制算法进行试验,实现了快速维持负载突变时液压马达转速的稳定。     

二滩水电站油、水、风系统设备运行与改造

水电站辅助设备的运行直接影响水电站运行的安全性和可靠性。二滩水电站投运初期，油、水、风系统先后出现了许多问题，通过应用新产品和新技术对其进行了改造。为水电厂辅助设备的设计、选型、安装提供了宝贵的经验，并对水电厂辅助设备的检修、调试和运行维护有一定的指导作用。     

The influence of raw material characteristics on the industrial pelletizing process and pellet quality

Industrial pelletizing of sawdust was carried out as a designed experiment in the factors: sawdust moisture content, fractions of fresh pine, stored pine and spruce. The process parameters and response variables were energy consumption, pellet flow rate, pellet bulk density, durability and moisture content. The final data consisted of twelve industrial scale runs. Because of the many response variables, data evaluation was by principal component analysis of a 12 × 9 data matrix. The two principal component model showed a clustering of samples, with a good reproducibility of the center points. It also showed a positive correlation of energy consumption, bulk density and durability all negatively correlated to flow rate and moisture content. The stored pine was more related to high durability and bulk density. The role of the spruce fraction was unclear. The design matrix, augmented with the process parameters was a 12 × 6 matrix. Partial least squares regression showed excellent results for pellet moisture content and bulk density. The model for durability was promising. A 12 × 21 data matrix of fatty- and resin acid concentrations measured by GC–MS showed the differences between fresh and stored pine very clearly. The influence of the spruce fraction was less clear. However, the influence of the fatty- and resin acids on the pelletizing process could not be confirmed, indicating that other differences between fresh and stored pine sawdust have to be investigated. This work shows that it is possible to design the pelletizing process for moderate energy consumption and high pellet quality.     

气浮设备的应用与比较

结合气浮设备的工作原理，从使用效果这一角度介绍了几种气浮设备的应用情况。对新型高效浅池气浮设备的“零速原理”及国内外同类设备对比、应用情况作了简单的介绍。     

立体车库二次调节提升系统的节能特性与转速控制

介绍了立体车库二次调节静液传动提升系统的工作原理、特点和节能特性，并进行了转速控制的试验研究，得出了应用二次调节技术能够回收和重新利用系统的制动动能和重力势能，减小系统装机容量。     

催化裂化沉降器多臂式旋流快分系统封闭罩内的流场

用智能型五孔探针对催化裂化沉降器内多臂式旋流分离系统封闭罩内的气体流场进行了测试。测试结果表明，罩内流场为轴对称的三维湍流场，在旋流头喷出口处径向速度较大，呈短路流现象。根据流场测试结果，建立了三维气流速度分布的无因次计算式，可供工程设计参考。     

The Effect of Structural Defects on the Thermal Conductivity of ZnS, ZnSe, and CdTe Polycrystals

ZnS, ZnSe, and CdTe polycrystals are experimentally investigated. Mechanisms are treated which restrict the thermal conductivity in samples prepared by recrystallization pressing and by deposition from the vapor phase and subjected to additional strain. Anomalies are observed on the temperature dependences of the thermal resistance of investigated samples, which are due to the special features of their phonon spectra and to the variation of the contribution made by longitudinal and transverse phonon branches to the heat transfer in the Debye temperature region and higher.