本教材所选的材料与一般的机械科普读物不同，不是对于专业知识的简单罗列，而是对专业知识的梳理介绍，目的是提高学生的专业英语阅读能力，使其能够在今后的工作中自主地吸收国际同行的有益经验和知识；在一个单元里，无论是主副课文的选材，还是练习的设计，都是围绕一个中心，目的是以多种形式帮助学习者熟悉和掌握本单元的内容，以期增强其专业英语的综合应用能力，真正做到学以致用。本教材配有MP3音频材料，为学生自学提供了方便。

UNIT 1 Engineering Drawing

 Reading and Translating

Section A Types of Views

Section B Mechanical Drawings and Dimensioning

 Listening and Speaking

 Writing: Description of First-angle Projection

UNIT 2 Tolerance and Fits

 Reading and Translating

Section A Limits, Tolerances and Fits

Section B Interchangeability and Measurement

 Listening and Speaking

 Writing: Introduction of a Company

UNIT 3 Engineering Materials

 Reading and Translating

Section A Metals and Their Properties

Section B Nonmetal Materials

 Listening and Speaking

 Writing: Order for Products

UNIT 4 Machine Elements

 Reading and Translating

Section A Transmissions

Section B Shafts and Accessories

 Listening and Speaking

 Writing: Email for Request

UNIT 5 Hydraulic Drive

 Reading and Translating

Section A Pumps and Actuators

Section B Valves and Basic Hydraulic Circuits

 Listening and Speaking

 Writing: Advertisement

UNIT 6 Machine Tools

 Reading and Translating

Section A Machine Tools

Section B In Machine Shop

 Listening and Speaking

 Writing: Letters for Machinery Exportation

UNIT 7 Forming

 Reading and Translating

Section A Hot Working

Section B Cold Working

 Listening and Speaking

 Writing: Complaint Letter

UNIT 8 Molding

 Reading and Translating

Section A Metal Casting

Section B Plastic Molding

 Listening and Speaking

 Writing: Illustrating Sand Casting Process

UNIT 9 NC and CNC

 Reading and Translating

Section A Numeral Control (NC)

Section B Computerized Numeral Control (CNC/DNC)

 Listening and Speaking

 Writing: Follow-up Letter

UNIT 10 CAD and CAM

 Reading and Translating

Section A Computer-aided Design(CAD)

Section B Computer-aided Manufacturing (CAM)

 Listening and Speaking

 Writing: Dealing with Problems

课文参考译文

Keys for Exercises

Bibliography