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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