水下封底混凝土与钢护筒粘结力试验

针对吊箱围堰施工中，混凝土与钢板间的粘结力无详实数据的现象，介绍了确定数据的实验模型、实验步骤，并分析了实验结果，以方便施工，指导施工。     

Numerical simulation of slider dynamics during slider–disk contact

In this paper, the dynamic behavior of pico slider in contact with the disk was calculated. The analysis model consists of a simplified suspension model, an air bearing model, and a slider–disk contact model. The contact model consists of two elements. One is surface roughness model measured by Atomic Force Microscope (AFM) and the other is micro-waviness model. The dynamic behaviors of the tri-pad slider are calculated at several rotation speeds to investigate slider vibration modes during slider–disk contact. The slider oscillation frequency depends on the rotation speed and it saturates about twice as much as eigen frequency of air bearing pitch mode.     

Influence of process variables on the drying of potato slices

Investigation of the effects of varying air velocity, slice thickness, and pre-treatment with sodium chloride solutions and surface active agents on drying potato slices indicated that the drying occurred entirely in the falling rate period and was controlled by the mechanism of liquid diffusion. The rate of drying, and therefore the diffusion coefficients, increased with the addition of sodium chloride and surface active agents. Diffusion coefficients were also influenced by air velocity and slice thickness, suggesting that the rate of drying of potato slices is controlled by a combination of internal and external resistances.     

从生产角度论述空分设备“有效产品成本”

引入空分设备“有效产品成本”概念，以气体成本算法和液体成本算法对空分设备正常产品单位成本和有效产品单位成本进行了比较，举例计算了液化装置的产品成本，提出利用“有效产品成本”概念来组织空分设备生产。     

公路桥涵台背设计的理论方法探讨

介绍了近年来国内外研究人员对桥涵台背的设计研究方法，结合桥涵与台背结构组合的设计原则，从搭板的型式、坡度、长度、厚度、配筋等方面提出了搭板设计的方法。     

冷库多台冷风机电热融霜时间与温度双重自动控制方案

从节能和可靠运行的角度提出冷库多台冷风机电热融霜时间与温度双重自动控制方法.     

户式太阳能空调应用方式分析

太阳能是绿色能源，户式太阳能空调应用的途径分为供热与制冷两部分，本文从技术经济性，如何计算太阳能设备间的匹配等几个方面进行了探讨。     

汽车排放控制系统中的氧传感器现状及展望

介绍了浓差型(Nernst型)、极限电流型和半导体电阻型等汽车排放控制系统中的氧传感器原理及结构。在综合该领域国内外研究现状的基础上,对氧传感器的发展进行了展望。     

中央空调冷冻水泵变频调速运行特性研究(2):模拟计算与分析

利用前文的分析结果，对采用定压差控制的某空调系统进行了模拟计算，并将计算结果与相似定律所得结果进行了比较，表明直接按相似定律所确定的泵的扬程和能耗均偏低；同时对冷冻水管路系统中的雷诺数Re、沿程阻力系数和管路阻抗等随空调负荷的变化关系，以及空调负荷分布、压差设定值等对冷冻水泵变频运行参数及能耗的影响等方面进行了分析，提出了冷冻水泵变频的最有利及最不利工况，并根据模拟与分析结果对空调冷冻水泵变频调速系统的设计等提出了建议。     

离心压缩机可倾轴瓦油封漏油问题的解决

本文全面分析了DH80—16型离心压缩机可倾轴瓦油封漏油的原因,并介绍了可倾轴瓦油封漏油问题的解决及具体实施方案。