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Reference
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Illustrations
> block and tackle
blast furnace
blue whale
CONTENTS
·
INDEX
·
ILLUSTRATIONS
·
BIBLIOGRAPHIC RECORD
The American Heritage
®
Dictionary of the English Language: Fourth Edition.
2000.
block and tackle
.
Half the pull (
p
) is required to lift the weight (
w
) with a two single-block and tackle unit.
(Source: Precision Graphics)
The American Heritage
®
Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.
CONTENTS
·
INDEX
·
ILLUSTRATIONS
·
BIBLIOGRAPHIC RECORD
blast furnace
blue whale
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