foreword
unit 1
lesson 1 materials scien
lesson 2 the history of metallurgy
lesson 3 metallurgy
lesson 4 metal
lesson 5 materials in lndustry
unit 2
lesson 1 casting
lesson 2 forging
lesson 3 welding
lesson 4 the history of welding
unit 3
lesson 1 lathe (metal)
lesson 2 milling machine
lesson 3 nc and (cnc)
lesson 4 milling cutter
lesson 5 types of milling cutter
lesson 6 computer numerical control
unit 4
lesson 1 the history and major development of automobile
lesson 2 engine operating principles
lesson 3 engine construction
lesson 4 the power train
unit 5
lesson forming o