Almost all research papers are expositions. The word exposition quite literally means to set forth a subject. It appeals to the understanding and it is the most common kind of writing, for it is applicable to any task that challenges the understanding--the definition of a word the way to a street address the structure of a plant, the mechanism of a watch, the cause of a historical event the meaning of a philosophy

6.1 概述 6.2 人机工程学与适用性设计 6.3 产品设计的适用性需求 6.4 适用性设计的发展要素 6.5 产品设计适用性的表现形式

第一节 微生物的能量代谢 第二节 分解代谢和合成代谢间的联系 第三节 微生物的代谢调控与发酵生产 第四节 次生代谢产物代谢调控机制

5.1 Introduction 5.2 Energy Balance 5.2.1 Energy Balance Equations 5.2.2 Calculations of Various Energy 5.2.3 Methods and Approaches 5.3 Thermal effects 5.3.1 Thermal in Physical changes 5.3.2 Thermal in Chemical changes 5.4 Examples of Energy Balance 5.5 Calculation of Consumption of Coolant, heating source and other energy 5.5.1 Coolant and Heating source frequently￾used 5.5.2 Consumption of Coolant and Heating source 5.5.3 Consumption of fuel 5.5.4 Consumption of Electric Energy 5.5.5 Consumption of Compressed air 5.5.6 Calculation of Sucking rate Vacuumed

第一节 桌椅设计概述 第二节 坐姿生理解剖基础 第三节 座椅的功能尺寸 第四节 坐垫与靠垫 第五节 办公桌的功能尺寸

Lecture D32: Damped Free Vibration Spring-Dashpot-Mass System k Spring Force Fs =-kx, k>0 Dashpot Fd =-cx, c>0 Newton's Second Law (mx =EF) mx +cx+kx (Define)Natural Frequency wn=k/m,and

Lecture D33: Forced Vibration Fosinwt m Spring Force Fs =-kx, k>0 Dashpot Fd =-ci, c>0 Forcing Fext Fo sin wt Newton's Second Law (mix =CF) mx+cx+kx= Fo sin wt =k/m,=c/(2mwn)

Surface quality is another aspect of machining accuracy. It consists of the surface finish and the physic mechanical state of the surface layer. It affects the proper functioning and service life of the parts Surface Finish Machining accuracy is expressed quantitatively in machining error. Surface finish is expressed quantitatively in surface roughness. The surface roughness on a machined workpiece surface is caused primarily by the geometrical factors(cutting tool geometry and cutting

不确定性分析 一、项目投资决策中收益与风险的权衡 收益 风险 投资 目标 二、主要的不确定性分析方法 盈亏平衡分析:确定盈利与亏损的临界点 一敏感性分析:分析不确定因素可能导致的后果 一概率分析:对项目风险作直观的定量判断

When the only force acting on a particle is always directed to- wards a fixed point, the motion is called central force motion. This type of motion is particularly relevant when studying the orbital movement of planets and satellites. The laws which gov- ern this motion were first postulated by Kepler and deduced from observation. In this lecture, we will see that these laws are a con- sequence of Newton's second law. An understanding of central