Unit One 1
Part A Technical Words and Phrases 1
Part B Reading Material——Typical Sentences 1
Part C Supplementary Reading 4
Unit Two 6
Part A Technical Words and Phrases 6
Part B Reading Material——Passages 6
Part C Supplementary Reading 9
Unit Three 12
Part A Technical Words and Phrases 12
Part B Reading Material(Basic Requirements of the Welding Processes) 12
Part C Supplementary Reading(Expansion in Welding) 14
Unit Four 16
Part A Technical Words and Phrases 16
Part B Reading Material(General Characteristics of the Welding Arc) 16
Part C Supplementary Reading(Thermal Effects) 19
Unit Five 21
Part A Technical Words and Phrases 21
Part B Reading Material(Flux-Shielded Arc Welding) 21
Part C Supplementary Reading(Types of Covering) 24
Unit Six 26
Part A Technical Words and Phrases 26
Part B Reading Material(Edge Preparation and Penetration Control for Arc Welding) 26
Part C Supplementary Reading(Prepared Joints) 29
Unit Seven 31
Part A Technical Words and Phrases 31
Part B Reading Material(The Historical Background of Gas-Shield Arc Welding) 31
Part C Supplementary Reading(Gas-shielded Arc Welding) 34
Unit Eight 36
Part A Technical Words and Phrases 36
Part B Reading Material(Electron-Beam Welding) 36
Part C Supplementary Reading[Automatic Welding(Ⅰ)] 40
Unit Nine 41
Part A Technical Words and Phrases 41
Part B Reading Material(Resistance Butt Welding) 41
Part C Supplementary Reading(Mechanizing Relative Motion) 43
Unit Ten 45
Part A Technical Words and Phrases 45
Part B Reading Material(Welding in the Century of Information Technology) 45
Part C Supplementary Reading(Gas Shielded Welder) 47
Unit Eleven 49
Part A Technical Words and Phrases 49
Part B Reading Material[Welding Automation and Mechatronics（机电一体化）in Small Batch Production] 49
Part C Supplementary Reading(Welding Inverter) 51
Unit Twelve 53
Part A Technical Words and Phrases 53
Part B Reading Material(Economic Robot Welding Production) 53
Part C Supplementary Reading(Welding Automation and Mechatronics in the Production of Railway Waggons) 55
Prepare For This Course 57
Comprehensive Reading Materials 59
Appendix A Technical Vocabulary 97
Appendix B Vocabulary 102
References 105