CONTENTS 1
Lesson One 1
Lesson Two 16
Lesson Three 31
Lesson Four 43
Lesson Five 55
Lesson Six 67
Review One 80
Lesson Seven 84
Lesson Eight 97
Lesson Nine 109
Lesson Ten 124
Review Two 138
Lesson Eleven 142
Lesson Twelve 156
Lesson Thirteen 168
Lesson Fourteen 182
Lesson Fifteen 196
Review Three 209
Lesson Sixteen 213
Lesson Seventeen 226
Lesson Eighteen 240
Lesson Nineteen 254
Lesson Twenty 269
Lesson Twenty-One 280
Lesson Twenty-Two 292
Review Four 306
Ⅰ．Engineering and the Sciences 313
Supplementary Reading 313
Ⅱ．The Main Tasks of an Engineer 314
Ⅲ．Engineering：The Application of Scientific Principles 316
Ⅳ．Mechanical Engineering 317
Ⅴ．The Basic Machining Techniques 318
Ⅵ．The Nature of Material Science 319
Reference Translations 321
Key to the Exercises 354
Appendixes 418