全书共10 单元,每单元包括与单元知识点相关的课文、同步阅读(含练习)、两篇提升性的阅读材料共4 篇课文及每单元后的练习,每单元的难度均由简到难。全书的内容涉及机械制图、工程材料、机械零件、公差配合、刀具、加工工艺、钳工、焊工、零部件及数控机床。本书选择的文章及阅读材料尽量贴近实际应用,反映机电技术的新的发展方向。在文章选择上,每单元的知识点均采用了由简到难的顺序,在授课教师的引导和帮助下,学生可以较好地完成本书的学习。 本书可作为职业院校机电类相关专业英语课程的教材,也可以作为广大自学者和工程技术人员的参考用书。

前言 Unit 1 Engineering Drawing1Text: Engineering Drawing Synchronous Reading: Engineering Drawing Reading Material A: Computer Aided Design (CAD) Reading Material B: Historical Development ofthe CAD/CAM Exercises 8 Unit 2 Mechanical Properties of Metals Text: Properties of Metals Synchronous Reading: Materials Reading Material A: Mechanical Properties of Metals Reading Material B: Hardness and Hardness Testing Exercises Unit 3 Mechanical Parts Text: Machine Elements Synchronous Reading: Machine Elements Reading MaterialA: Gears Reading Material B: Cams Exercises Unit 4 Tolerance and Fits Text: Tools and Measures Synchronous Reading: Measurement Reading Material A: Dimensional Measurement Reading Material B: Limits and Tolerances Exercises Unit 5 Machine Tools Text: Five Basic Machining Techniques Synchronous Reading: The Machine Tools Reading Material A: The Tool Material Reading Material B: The Production Tooling Exercises 目录 Unit 6 Machining Text: Primary Processes and Secondary Processes Synchronous Reading: Machine Tools Reading Material A: The Engine Lathe Reading Material B: Milling Machines, Shapers, Planers and Grinding Machines Exercises Unit 7 Basic Knowledge of Fitter Text: Benchwork and Fitters 52 Synchronous Reading: Forging, Stamping and Rolling Reading Material A: Plumbing Reading Material B: Forging 57 Exercises Unit 8 Welding Text: Welding Synchronous Reading: Arc Welding62 Reading Material A: The History of Welding 63 Reading Material B: Stresses Occurring in Welding 65 Exercises Unit 9 Mechatronics Text: Stepper Motor Synchronous Reading: Servo System Reading Material A: Motors Reading Material B: What Is Mechatronics?73 Exercises Unit 10 CNC Machines Text: The Components of CNC Machine Synchronous Reading: The Need for Numerical Control Reading Material A: Numerical Control Automation Reading Material B: Advantages and Disadvantages of NC 80 Exercises 附录 词汇表 参考文献