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单词 screw piling
释义

WordReference Random House Unabridged Dictionary of American English © 2024
screw pile′, 
  1. Civil Engineeringa pile that is used for the foundations of bridges, lighthouses, etc., and has a screwlike lower end for drilling through and taking firm hold in compacted material.
  • 1830–40
screw pil′ing. 

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