本书内容共13章，即机械基础知识与部件、机械加工工具、机械加工、公差拟合与测量、钢铁及其制造、电的常识、电与电路、无线电通信与电器维修、电焊、能源、微机组装与维护、自动化与机器人、电脑制图。为便于读者更好地利用本书，编者在每节后面都附有详细的课文注释和词汇，希望对读者有所帮助。

本书适合作为中职自学考试和岗位培训、技术等级考核培训等的教学用书。根据中等职业学校学生的情况及国内外教材编写的经验，没有在本书引入晦涩难懂的理论。叙述上深入浅出，突出基本概念和应用，力争做到“通俗易懂，好教好学”。

本书内容共13章，即机械基础知识与部件、机械加工工具、机械加工、公差拟合与测量、钢铁及其制造、电的常识、电与电路、无线电通信与电器维修、电焊、能源、微机组装与维护、自动化与机器人、电脑制图。为便于读者更好地利用本书，编者在每节后面都附有详细的课文注释和词汇，希望对读者有所帮助。

本书内容新颖、图文并茂、通俗易懂、门类齐全、适应面广，适合中等职业学校学生的实际水平。

Part One. Basic Knowledge of Machine and Mechanical Components

1.  Basic Knowledge of Machine

2.  Shaft

3.  Shaft Accessories--Keys and Pins

4.  Bearings

5.  Screws

6.  Worms, Worm Gears

7.  Cam

8.  Gears

Part Two: Machine Tools

1.  Fixture and Jig

2.  Reamer

3.  Grinding Wheel

4.  Boring Tool

5.  Turning Tool

6.  Cutting Tool

Part Three: Machining

1.  Turning

2.  The Lathe and Its Construction

3.  Milling

4.  Milling Machine

5.  Grinding

6.  Bench Work

Part Four: Tolerance, Fits and Measurement

1.  Limits of Size and Tolerance

2.  Fits

3.  Roughness

4.  Dimension Measurement

5.  Common Equipments

6.  Measuring Tool

Part Five: Steel and Its Treatment

1.  Kinds of Steel

2.  Heat Treatment

3.  Casting

4.  Forging

5.  Flow Control Valve

6.  Concept of Quality - Historical Background

7.  Quality Management Organizations and Awards

Part Six: Basic Knowledge of Electricity

1.  The Importance of Electricity

2.  Introduction

3.  Electric Charge

4.  Electric Current

5.  Electric Field

6.  Electric Potential

7.  Electromagnetism

Part Seven: Electricity and Electric Circuits

1.  Generation

2.  Uses

3.  Electric Circuit 1

4.  Electric Circuit 2

5.  Supplementary Materials: Circuits and Circuit Components

6.  Transistor

7.  How a Transistor Works

Part Eight: Radio Communication and Electric Maintenance

1.  Radio

2.  How Radio Waves Travel

3.  Digital Transmission

4.  Basic Knowledge of Electric Maintenance

5.  Commonly Used Tools

6.  Ordinary Instruments

Part Nine: Electric Welding

1.  Basic Knowledge of Electric Welding

2.  Types of Welding

3.  Electric Arc Welding

4.  Electrode Holder

5.  Welding Helmets

6.  Safety Articles

7.  The Welding History and New Development

Part Ten: Energy

1.  Energy

2.  Solar Energy

3.  Solar Energy Using

4.  Wind Power

5.  History of Wind Power

6.  Hydropower

7.  Hydroelectric Power

Part Eleven: Microcomputer Assembly and Maintenance

1.  Introduction

2.  Main Components

3.  Structure of Computer Systems

4.  Networking and the Internet

5.  Information Technology

6.  Information Age

Part Twelve: Automation and Robots

1.  Automation

2.  Current Emphasis

3.  Historical Perspective of Control Engineering

4.  The Transmitter of Radio Controlled Toys

5.  Basic Knowledge of Robot

6.  Industrial Robots

Part Thirteen: Working Drawings

1.  Working Drawings 1

2.  Working Drawings 2

3.  Basic Knowledge of CAD/CAM

4.  The Application of CAD/CAM

5.  The CAD/CAM Marketplace Today

6.  Computer Plotting