foreword unit 1 lesson 1 the history of metallurgy lesson 2 metallurgy lesson 3 metal lesson 4 materials in industry unit 2 lesson 1 casting lesson 2 forging lesson 3 wel unit 3 lesson 1 lathe (metal) lesson 2 milling machine lesson 3 types of milling cutter unit 4 lesson 1 engine operating principles lesson 2 engine construction unit 5 lesson 1 forming of sheet metals lesson 2 metal stamping process and die design lesson 3 stics and injection mol lesson 4 design of injection mold unit 6 lesson 1 food robotics lesson 2 robotic inspection unit 7 lesson 1 puter-aided design (cad) lesson 2 puter aided manufacturing (cam) lesson 3 puter numerical control unit 8 lesson 1 3d printing technology lesson 2 "inter +" & "chinese wisdom made" answer to exercises vocabulary
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