包邮机电专业英语

unit one mechanical design　1

section　one warming - up　2

section　two real world　3

section　three brighten your eyes　8

section　four translation skills　13

section　five writing　16

section　six grammar　18

unit　two computer-aided design　23

section　one warming - up　24

section　two real world　25

section　three brighten your eyes　30

section　four translation skills　34

section　five writing　38

section　six grammar　41

unit　three computer-aided

manufacturing　45

section　one warming - up　46

section　two real world　47

section　three brighten your eyes　51

section　four translation skills　55

section　five writing　59

section　six grammar　61

unit　four safety first　65

section　one warming - up　66

section　two real world　66

section　three brighten your eyes　71

section　four translation skills　75

section　five writing　79

section　six grammar　81

unit　five safety labels　85

section　one warming - up　86

section　two real world　87

section　three brighten your eyes　91

section　four translation skills　9