1. Automatic Control System 1.1 Introduction 1.2 An example 1.3 Types of control system 2. Mathematical Foundation 2.1 The transfer function concept 2.2 The block diagram. 2.3 Signal flow graphs 2.4 Construction of signal flow graphs 2.5 General input-output gain transfer 3. Time-Domain Analysis Of Control System 3.1 Introduction 3.2 Typical test signals for time response of control systems 3.3 First –Order Systems 3.4 Performance of a Second-Order System 3.5 Concept of Stability 4. The Root Locus Techniques 4.1 Introduction 4.2 Root Locus Concept 4.3 The Root Locus Construction Procedure for General System 4.4 The zero-angle (negative) root locus 5. Frequency-Domain Analysis of Control System 5.1 Frequency Response 5.2 Bode Diagrams 5.3 Bode Stability Criteria 5.4 The Nyquist Stability Criterion 6. Control system design 6.1 Introduction 6.2 Cascade Lead Compensation 6.3 Properties of the Cascade Lead Compensator 6.4 Parameter Design by the Root Locus Method

为控制Incoloy825合金中的Al、Ti含量，并减少电渣过程中氟化物的挥发。借助FactSage热力学软件，建立渣?金反应的热力学模型。设计出适宜控制Al、Ti含量的低氟渣系，探究了渣中组元与Al2O3和TiO2活度比的关系，并通过高温渣–金平衡实验进行验证。结果表明：当渣中CaO和Al2O3含量增加，导致$\\lg \\left( {{{a_{{\\rm{A}}{{\\rm{l}}_{\\rm{2}}}{{\\rm{O}}_{\\rm{3}}}}^2} / {a_{{\\rm{Ti}}{{\\rm{O}}_{\\rm{2}}}}^3}}} \\right)$

重点掌握内容： 信号的分类与主要参数； 信号调理的基本概念及其实现方法介绍； 采样定理； 被测信号和测试设备的连接方式； 测量放大器的设计方法与共模抑制能力分析； D/A转换器的作用； 采集的基本概念

Text Understanding of Text A Text Organization Language Points Useful Expressions Sentences to Be Remembered Exercises Background Information Text Understanding of Text B Text Organization Language Points Useful Expressions Sentences to Be Remembered Exercises Background Information Grammar Focus Grammatical Points Exercises Communicative Activities Listening Communicative Expressions Learn to Communicate

AC(alternating current) 交流(电) A／D(analog to digital) 模拟／数字转换 ADC(analog to digital convertor) 模拟／数字转换器 ADM(adaptive delta modulation) 自适应增量调制 ADPCM(adaptive differential pulse code modulation) 自适应差分脉冲编码调制

9.1 Sn在零磁场时Tc为 3.7K，在绝对零度时的临界磁场Hc(0)为 24×103 A/m。求当T 为 2K时的临界磁场Hc。如果 2K时半径为 0.1cm的Sn线通过电流，求在超导线表明的磁 场强度H等于Hc（2K）时的临界电流为多少安培？

离子液体电沉积铝技术具有广阔的应用前景，而添加剂是提高铝镀层性能的有效方法，但相关作用机制还有待明确。本文应用量子化学和分子动力学模拟研究了二氯甲烷（DCM）和甲苯(C7H8)对氯化-1-丁基-3-甲基咪唑/三氯化铝([BMIM]Cl/AlCl3)体系的微观结构、物理化学性质和铝电沉积的影响。发现DCM易与阴、阳离子形成氢键，分布在阴阳离子之间使得阴阳离子间距离增加、相互作用能减小, 导致阴阳离子扩散能力增强、铝配离子更倾向以${\\rm{A}}{{\\rm{l}}_2}{\\rm{Cl}}_7^ -$

People and issues – Text (A) Text study Background information Words and expressions Text Looking at the text Working with words Listening Listening 1 Listening 2 Listening 3 Personal view – Text (B) Text study Background information Words and expressions Text Looking at the text Working with words Listening 4 Listening 5 Listening Speaking

1、双键(C = C)的结构 π键特点： a．π键不能独立存在；与σ键共存； b．π键不能旋转；产生几何异构； c, π键富含电子；易与缺电子试剂反应； d, π键受原子核控制弱；易被极化

◆ A Model of the Image Degradation/Restoration Process ◆ Noise Models ◆ Restoration in the Presence of Noise Only-Spatial Filtering ◆ Periodic Noise Reduction by Frequency Domain Filtering ◆ Linear, Position-Invariant Degradations ◆ Estimating the Degradation Function ◆ Inverse Filtering ◆ Minimum Mean Square Error (Wiener) Filtering ◆ Constrained Least Squares Filtering ◆ Geometric Mean Filter ◆ Image Reconstruction from Projections*