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The Epic Interactive Encyclopedia 1998
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Epic Interactive Encyclopedia, The - 1998 Edition (1998)(Epic Marketing).iso
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Propeller
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1992-09-03
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271b
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9 lines
A propeller is a screwlike device used to
propel some ships and aeroplanes. A propeller
has a number of curved blades that describe a
helical path as they rotate with the hub, and
accelerate fluid (liquid or gas) backwards
during rotation.
Subject by: Vince Pike