第一讲 零件的技术要求 第二讲 金属切削刀具 第三讲 基本零件的工艺过程

概述 在过去的几年中,万维网(Web)技术的飞速 发展融汇了大量的信息,从商品广告到人才招 聘;从学术交流到娱乐新闻万维网提供了 一个可以轻松驾驭的图形化用户界面,以查阅 因特网上的文档,这些文档以及它们之间的链 接一起构成了一个庞大的信息网

网站的日常管理 ·网站的日常事务会很多,最为繁重的工 作母过于对用户发表的文章进行审阅和 发表。 ·除此之外,网站也会面临所有媒体都会 经历的重要任务:改版

Chapter 2 Supercritical fluid extraction and its application in the food industry DAVID STEYTLER, School of Chemical Sciences, University of East Anglia, Norwich NR4 7TJ 2.1 INTRODUCTION Solvent extraction is one of the oldest methods of separation known and certainly dates back to prehistory. The science of solvent extraction has evolved accordingly over a long period of time and much progress has been made in the understanding of solvation and

Chapter 4 Ultrafiltration M.J. LEWIS, Department of Food Science and Technology, The University of Reading RG6 6AP 4.1 INTRODUCTION Ultrafiltration offers the opportunity to concentrate large molecular weight components without the application of heat or a change of phase. Such components are rejected

Chapter 6 Ion-exchange and electrodialysis ALISTAIR S. GRANDISON, Department of Food Science and Technology, The University of Reading, Reading RG6 6AP, UK Ion-exchange and electrodialysis are distinct methods of separation, but can conveniently be treated together, as the basic criterion for separation in both cases is the molecular

Chapter 8 Fractionation of fat KANES K. RAJAH, Welsh Institute of Rural Studies, University of Wales, Aberyst- wyth, Penglais Campus, Aberystwyth, Dyfed SY23 3DD 8.1 INTRODUCTION Edible fats are derived from animal, marine or plant sources. They are often not available

This book concentrates on the more recent methods and techniques for separating food components and products of the biotechnology industry. Each chapter deals with a specific type or area of application and includes information on the basic principles, industrial equipment available, commercial applications and an overview of current research and development and some of the heat and mass transfer considerations in batch and continuous processes Separations from solids, liquids and gases are briefly discussed. A summary is provided of the more conventional separation techniques such as screening, filtration and centrifugation, and techniques for

Preface This book concentrates on the more recent methods and techniques for separating food components and products of the biotechnology industry. Each chapter deals with a specific type or area of application and includes information on the basic principles

地基在荷载作用下会产生附加应力,从而引起地基(主要是竖向变形),建筑 物基础亦随之沉降。如果沉降超过容许范围,就会导致建筑物发裂或影响其正 常使用,严重者还会威胁建筑物的安全因此,在地基基础设计与施工时,必 须重视地基变形问题;如果地基不均匀或上部结构荷载差异较大,还应考虑不 均匀沉降对建筑物的影响