《英语 第2版 上》

CONTENTS1

Set 11

A．MECHANISM ILLUSTRATION1

B．DRAWING7

C．IDEAL AND PRACTICAL MACHINES11

Set 216

A．FRICTION FORCES AND ROLLING FRICTION16

B．FRICTION AND LUBRICATION23

C．PREFACE TO“GRAPHICS INENGINEERING DESIGN”27

A．BEARINGS31

Set 331

B．ROLLING CONTACT BEARINGS37

C．FRICTION42

Set 445

A．POWER-TAKE-OFF DRIVES45

B．SHAFTS AND COUPLINGS52

C．BEARINGS57

Set 560

B．TYPES OF GEARS67

A．GEARING69

C．LOADS IMPOSED ON PTO SHAFTS72

A．BELT DRIVES75

Set 675

B．V BELTS81

C．TYPES OF DRIVE CHAIN COMMON ON FARM MACHINES86

Set 789

A．HYDRAULIC SYSTEMS FOR FARM EQUIPMENT89

B．PUMPS96

C．VARIABLE-SPEED V-BELT DRIVES101

Set 8105

A．SINGLE PHASE ELECTRIC MOTORS105

B．SELECTING ELECTRIC MOTORS112

C．HYDRAULIC PUMPS118

A．POSSIBLE APPLICATIONS FOR SMALL COMPUTERS WITHINFARMING123

Set 9123

B．THE ULTIMATE MACHINE：THE ELECTRONIC COMPUTER130

C．MOTOR PROTECTION AND CONTROL135

Set 10140

A．AGRICULTURAL ENGINEERING AND ITS OBJECTIVES140

B．PREFACE TO“INTRODUCTION TO AGRICULTURALENGINEERING”146

C．PREFACE TO“DIGITAL COMPUTER FUNDAMENTALS”152

APPENDIX Ⅰ：VOCABULARY156

APPENDIX Ⅱ：BIBLIOGRAPHY182

APPENDIX Ⅲ：CHINESE TRANSLATION OF TEXTS183