Unit 1Understanding of Mechanical Drawings and Electrical Diagrams Unit 2 Mechanical and Electrical Components Unit 3 Turning Unit 4 Milling Unit 5 Grinding Unit 6 Bench Work Unit 7 Electric Maintenance Unit 8 Household Electric Appliances Maintenance Unit 9 Electric Welding Unit 10 NC Lathe Unit 11 Microcomputer Assembly and Maintenance Unit 12 Heat Treatment Unit 13 Applying for a job Unit 14 Dialogue 參考譯文