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The Epic Interactive Encyclopedia 1997
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The_Epic_Interactive_Encyclopedia_97.iso
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escalator
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1992-09-03
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360b
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11 lines
An escalator is an automatic moving staircase
that carries people between floors or levels.
It consists of treads linked in an endless
belt arranged to form strips (steps), powered
by an electric motor that moves both steps
and handrails at the same speed. Towards the
top and bottom the steps flatten out for ease
of passage.
Subject by: Robert Small