CONTENTS 1
1．What Is Technical English? 1
2．Landing on the Moon 4
3．Digital Computers 7
4．Multimeter 10
5．What Are Magnets? 13
6．Electrical Current 17
7．The Three States of Matter 20
8．Heat Treatment 24
9．Amplifier Design 27
10．Sone New Units 30
11．Friction 34
12．Metals and Their Properties 37
13．Franklin and Electricity 41
14．Transformer 44
15．Transistor 47
16．What Is Electronics? 50
17．What Is Temperaturc? 53
18．Temperature and Heat 56
19．Correct Choice of Fuse 59
20．The Nature of Magnetic Materials 64
21．Conductors 67
22．The Nature of Plastics 70
23．Corrosion 73
24．How to Transform Energy into Work 76
25．Ohm s Law 80
26．Engineering Materials 84
27．Work 88
28．Boiling Point and Freezing Point 92
29．Expansion and Contraction 96
30．How Solids Transmit Sound 100
Vocabulary 104