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runback |
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runback [′rən‚bak]
(chemical engineering) A pipe through which all or part of a distillation column's overhead condensate can be run back into the column, instead of being drawn off as product. (engineering) To retract the drill feed mechanism to its starting position. To drill slowly downward toward the bottom of the hole when the drill string has been lifted off-bottom for rechucking. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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