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needling

   Also found in: Dictionary/thesaurus, Medical, Legal, Idioms, Wikipedia 0.01 sec.
needling [′nēd·əl·iŋ]
(civil engineering)
Underpinning the upper part of a building with horizontally placed timber or steel beams.
(mining engineering)
Cutting holes or ledges in a coal bed or rock surface for receiving the ends of timber supports.


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Many advances in press felt technology focus on how the nonwoven "batt" that carries the paper web is attached under tension to the woven base fabric structure through a needling process.
 
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