英语 第2版 上PDF电子书下载

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CONTENTS 1

Set 1 1

A．MECHANISM ILLUSTRATION 1

B．DRAWING 7

C．IDEAL AND PRACTICAL MACHINES 11

Set 2 16

A．FRICTION FORCES AND ROLLING FRICTION 16

B．FRICTION AND LUBRICATION 23

C．PREFACE TO“GRAPHICS INENGINEERING DESIGN” 27

A．BEARINGS 31

Set 3 31

B．ROLLING CONTACT BEARINGS 37

C．FRICTION 42

Set 4 45

A．POWER-TAKE-OFF DRIVES 45

B．SHAFTS AND COUPLINGS 52

C．BEARINGS 57

Set 5 60

B．TYPES OF GEARS 67

A．GEARING 69

C．LOADS IMPOSED ON PTO SHAFTS 72

A．BELT DRIVES 75

Set 6 75

B．V BELTS 81

C．TYPES OF DRIVE CHAIN COMMON ON FARM MACHINES 86

Set 7 89

A．HYDRAULIC SYSTEMS FOR FARM EQUIPMENT 89

B．PUMPS 96

C．VARIABLE-SPEED V-BELT DRIVES 101

Set 8 105

A．SINGLE PHASE ELECTRIC MOTORS 105

B．SELECTING ELECTRIC MOTORS 112

C．HYDRAULIC PUMPS 118

A．POSSIBLE APPLICATIONS FOR SMALL COMPUTERS WITHINFARMING 123

Set 9 123

B．THE ULTIMATE MACHINE：THE ELECTRONIC COMPUTER 130

C．MOTOR PROTECTION AND CONTROL 135

Set 10 140

A．AGRICULTURAL ENGINEERING AND ITS OBJECTIVES 140

B．PREFACE TO“INTRODUCTION TO AGRICULTURALENGINEERING” 146

C．PREFACE TO“DIGITAL COMPUTER FUNDAMENTALS” 152

APPENDIX Ⅰ：VOCABULARY 156

APPENDIX Ⅱ：BIBLIOGRAPHY 182

APPENDIX Ⅲ：CHINESE TRANSLATION OF TEXTS 183

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